Area profile · Greater Sydney
Castle Cove - Northbridge has an estimated 13,632 residents, up 1.4% since the 2021 Census, with 165 projects tracked in the area around Castle Cove - Northbridge.
Updated 14 Oct 2026.
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The Castle Cove - Northbridge Statistical Area (Lv2), located 7.0 kilometres north from Sydney CBD between Castle Cove and Northbridge in NSW, Australia, had an estimated population of 13,632 as of Aug 2026. The 2021 Census recorded 13,440 people, indicating little change. AreaSearch's assessment of the latest ERP (Estimated Resident Population) outputs from the ABS and new addresses added since the Census found no significant population movements. Family households and couples with children are prominent, alongside high proportions of teenagers and middle-aged residents.
Set among tree-lined streets, parks and water views, the area combines residential surroundings with access to schools, cafes, sports clubs and marinas, supported by a diverse and welcoming community. Infrastructure and major project spending is planned, which may support performance and demand, while population growth remains limited. Sales activity is relatively low compared with population size. The area's amenities and residential character contribute to its appeal for families and individuals.
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01Profile
The analysis, national rankings and who lives there.
The Castle Cove - Northbridge Statistical Area (Lv2), located 7.0 kilometres north from Sydney CBD between Castle Cove and Northbridge in NSW, Australia, had an estimated population of 13,632 as of Aug 2026. The 2021 Census recorded 13,440 people, indicating little change. AreaSearch's assessment of the latest ERP (Estimated Resident Population) outputs from the ABS and new addresses added since the Census found no significant population movements. Family households and couples with children are prominent, alongside high proportions of teenagers and middle-aged residents.
Set among tree-lined streets, parks and water views, the area combines residential surroundings with access to schools, cafes, sports clubs and marinas, supported by a diverse and welcoming community. Infrastructure and major project spending is planned, which may support performance and demand, while population growth remains limited. Sales activity is relatively low compared with population size. The area's amenities and residential character contribute to its appeal for families and individuals.
Estimated resident population by year (ABS, not Census counts): 12,615 in 2001 and 13,592 in 2025. The dashed segment ends at the AreaSearch estimate for Aug 2026: 13,632 (ABS June 2025 base).
Share of residents in each age band (ABS age profile, scaled to the Aug 2026 AreaSearch estimate). Largest: 15 to 24, 16.3%.
Share of households in each weekly household income band (2021 Census). Largest: $4000+, 49.9%.
Castle Cove - Northbridge ranks in the 97th percentile nationally for health and the 95th for education.
Each bar and spoke is a national percentile; the dashed ring is the typical area. 99th = higher than 99 in every 100 neighbourhood-sized areas across Australia (ABS SA2 areas). Higher means more of the measure, not necessarily better. Orange marks the top three measures where a higher percentile is better; not Age, Housing or Housing Cost.
02Market and pipeline
Rents, sale prices and what is being built.
The median rent in Castle Cove - Northbridge is $1,275 a week, up 8.8% over 12 months to Jun 2026 and 62% above Greater Sydney. The gross rental yield across all dwellings is 1.5%.
62% above Greater Sydney on median weekly rent
Median weekly rent by year, lodged bonds. Houses (solid line): $1,577 in 2017, $1,968 in 2026; Units (dashed orange line): $757 in 2017, $979 in 2026. The latest is to Jun 2026.
Some rents are estimated from nearby areas.
Yield is indicative: rents and sales come from different property pools.
| Address | Sale price | Settled | Address type |
|---|---|---|---|
| 33/52 Eastern Valley Way, Northbridge NSW 2063 | $1,760,000 | 2 Oct 2026 | Unit |
| 47 Tunks Street, Northbridge NSW 2063 | $7,608,000 | 24 Sep 2026 | Street address |
| 12 Sunnyside Crescent, Castlecrag NSW 2068 | $4,850,000 | 23 Sep 2026 | Street address |
| 38 Castle Cove Drive, Castle Cove NSW 2069 | $2,880,000 | 21 Sep 2026 | Street address |
| 6 Covelee Circuit, Middle Cove NSW 2068 | $2,450,000 | 17 Sep 2026 | Street address |
| 1/270 Sailors Bay Road, Northbridge NSW 2063 | $1,100,000 | 17 Sep 2026 | Unit |
| 5 The Parapet, Castlecrag NSW 2068 | $5,050,000 | 16 Sep 2026 | Street address |
| 7 Knight Place, Castlecrag NSW 2068 | $5,075,000 | 9 Sep 2026 | Street address |
| 39 Deepwater Road, Castle Cove NSW 2069 | $3,650,000 | 26 Aug 2026 | Street address |
| 8 Padulla Place, Castle Cove NSW 2069 | $3,302,000 | 24 Aug 2026 | Street address |
The 10 most recent of the 49 residential sales recorded since 1 May 2026 (the latest settled 2 Oct 2026), newest first. The median of these 49, houses and units together, was $4,410,000 (a different set from the medians above). Source: NSW Valuer General / AreaSearch, to October 2026. Commercial, vacant land and nominal sales are left out. Unit means the address has a unit number; a street address has none.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Median rent | $1,275 a week | Rental bond lodgements, median for the 12 months to Jun 2026 | |
| Change in median rent over 12 months | +8.8% | Rental bond lodgements, median for the 12 months to Jun 2026 | |
| Gross rental yield, all dwellings | 1.5% | AreaSearch estimate, indicative: rents and sales come from different property pools | |
| Median house price | $4.41m | Contract-date median, 2026 to date | |
| Median unit price | $1.23m | Contract-date median, 2026 to date |
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Median price, latest residential sales | $4,410,000 | Median of the 49 most recent residential sales, settled 1 May 2026 to 2 Oct 2026, NSW Valuer General / AreaSearch | |
| Median rent, houses | $1,968 a week | Rental bond lodgements, median for the 12 months to Jun 2026 | |
| Change in median rent for houses over 12 months | +5.3% | Rental bond lodgements, median for the 12 months to Jun 2026 | |
| Median rent, units | $979 a week | Rental bond lodgements, median for the 12 months to Jun 2026 | |
| Change in median rent for units over 12 months | +5.6% | Rental bond lodgements, median for the 12 months to Jun 2026 | |
| Gross rental yield, houses | 2.3% | AreaSearch estimate, indicative: rents and sales come from different property pools | |
| Gross rental yield, units | 4.2% | AreaSearch estimate, indicative: rents and sales come from different property pools | |
| Median rent, Chatswood - Lane Cove | $861 a week | Rental bond lodgements, median for the 12 months to Jun 2026 | |
| Change in median rent, Chatswood - Lane Cove, over 12 months | +6.5% | Rental bond lodgements, median for the 12 months to Jun 2026 | |
| Median rent, Greater Sydney | $789 a week | Rental bond lodgements, median for the 12 months to Jun 2026 | |
| Change in median rent, Greater Sydney, over 12 months | +5.3% | Rental bond lodgements, median for the 12 months to Jun 2026 | |
| Median rent, NSW | $715 a week | Rental bond lodgements, median for the 12 months to Jun 2026 | |
| Change in median rent, NSW, over 12 months | +5.6% | Rental bond lodgements, median for the 12 months to Jun 2026 |
See the development applications we track, then draw your own catchment and map retailers, health, schools and more.
Status of the 194 tracked applications: 88 approved, 38 under assessment, 68 other (refused, withdrawn or no status).
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AreaSearch tracks 165 projects in and around Castle Cove - Northbridge, 34 of them under construction.
Completed NSW Government upgrade to Northbridge Public School, delivered by School Infrastructure NSW under the Rebuilding Public Education program.
Luxury boutique development by WINIM comprising 7 oversized townhomes and 5 spacious apartments designed by Rothelowman. Features private gardens, internal lifts, and premium finishes opposite Northbridge Shore Playing Fields.
Boutique collection of 12 luxury 1, 2 and 3-bedroom apartments setting a new benchmark in high-end living. Inspired by nature and defined by architectural elegance, featuring contemporary design with premium finishes and landscaped spaces integrated with natural surroundings.
Boutique mixed-use development comprising 38 luxury apartments over retail and commercial space in the heart of Cammeray village. Designed with premium ground-floor amenities and pedestrian activation to enhance the local town centre.
Boutique collection of 28 luxury apartments and townhouses set within a landscaped former quarry site in Naremburn. The project is currently under construction.
Residential development within the St Leonards South precinct, involving demolition of existing structures and construction of five residential flat buildings with 207 apartments, basement parking, and communal open space, contributing to urban renewal and increased housing density.
Approved mixed-use development featuring 235sqm of prime retail on ground level with 8 residential apartments above. B1 Neighbourhood Centre zoning with 1.5:1 FSR and 11m height limit. Designed by Architecture Urbaneia.
A $250 million, 32-storey State Significant Development delivering over 150 one, two, three and four-bedroom apartments and penthouses, including 41 affordable units. Ground-level podium provides approximately 2,500sqm of retail and commercial space.
Boutique luxury residential development comprising 11 oversized two and three bedroom apartments and a full-floor penthouse overlooking Middle Harbour. Developed by Abadeen with architecture by MHNDU, the project is now in its final construction stage and is actively marketing completed-quality residences.
A $640 million, 22-storey mixed-use development at the Five Ways intersection in Crows Nest, comprising 188 apartments (140 market and 48 affordable housing), a 100-room boutique hotel, ground-floor retail and commercial premises within a 3-storey podium, and seven basement levels.
A $22 million mixed-use development with apartments, business and retail space in a part-four, part-eight storey building. Includes rooftop communal space, replacing a planned childcare facility. Offering 96 parking spots.
Deicorp's $640M landmark mixed-use development at the Five Ways junction in Crows Nest. The 22-storey building, designed by Turner Studio, delivers 188 apartments (48 affordable) above a 100-room boutique hotel, ground-floor retail and dining, a resident Skygarden, and seven basement levels of parking.
Images marked AI impression are illustrative only and not photographs of the project; follow the project links for actual imagery. Original imagery? Contact us.
Estimated completion year of the 96 projects in and around the area that are not yet completed and have one: 2024 1, 2025 8, 2026 29, 2027 23, 2028 22, 2029 6, 2030 3, 2031 1, 2032 2, 2033 0, 2034 0, 2035 0, 2036 1. 27 have no completion year.
AreaSearch has tracked 194 substantial development applications lodged in and around Castle Cove - Northbridge over the past 5 years, 173 in the last 12 months; 38 are recorded as under assessment. Coverage varies by council.
Applications per year (dashed: part year): 2021 (part year) 1, 2022 3, 2023 3, 2024 8, 2025 6, 2026 (to Oct) 173.
Key application 100 Edinburgh Road, Castlecrag Retail | $71m | 38 dwellings | 3 storeys Under Assessment
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Tracked applications | 194 | Tracked by AreaSearch, in and around the area, last 5 years | |
| Tracked, last 12 months | 173 | Tracked by AreaSearch, in and around the area | |
| ABS building approvals | 3.6 per 1,000 people | ABS building approvals | 47th percentile nationally |
| Average approvals a year | 49 | ABS building approvals | 58th percentile nationally |
| Applications approved | 88 | Tracked by AreaSearch, in and around the area, last 5 years | |
| Applications under assessment | 38 | Tracked by AreaSearch, in and around the area, last 5 years |
Key infrastructure and planning changes likely to influence the Castle Cove - Northbridge SA2 include: Northbridge Public School Upgrade (Completed); Flo Northbridge by WINIM (Approved); Aurora Willoughby (Planning); The Quarry Naremburn (Construction); and The Pagewood St Leonards (Construction). These projects represent significant developments that will shape the area's future infrastructure landscape.
Infrastructure development impacting the Castle Cove - Northbridge SA2 spans multiple sectors including Residential Development, Communities, Precincts & Urban Renewal, and Education & Training.
On AreaSearch's development drivers ranking, residential development activity is lower than average in Castle Cove - Northbridge compared with local real estate markets nationally.
Dwelling approval activity in the Castle Cove - Northbridge SA2 area has seen 118 residential approvals over the past two financial years, based on AreaSearch's SA2 aggregation method. The Castle Cove - Northbridge SA2's current population of 13,632 has been supported by 49 approvals on average over recent years.
The Castle Cove - Northbridge SA2 has seen 3.6 approvals per 1,000 people in recent years, compared to 6.2 approvals in Greater Sydney. This means that one dwelling has been approved for every 276 people in the Castle Cove - Northbridge SA2, compared to one for every 165 in Greater Sydney.
The long-run outlook for development is part of AreaSearch Operator and Pro. Log in to see the forecast detail in Full.
Looking at development activity over the past five years, the Castle Cove - Northbridge SA2's approval levels have been slightly above the yearly average of 49, showing modest growth in recent years.
Over the past five years, the Castle Cove - Northbridge SA2 has seen 246 residential approvals while population has remained stable or declined, indicating potential market oversupply.
03People
Population, age, income, work, education and more.
99th = higher than 99 in every 100 neighbourhood-sized areas across Australia (ABS SA2 areas). Higher means more of the measure, not necessarily better.
Castle Cove - Northbridge is positioned among the lower quartile of areas assessed nationally for population growth based on AreaSearch's assessment of recent, and medium term trends.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Population | 13,632 | AreaSearch estimate, Aug 2026, from the ABS June 2025 base | |
| Growth since 2021 Census | +1.4% | AreaSearch estimate, Aug 2026, against the 2021 Census | 15th percentile nationally |
| Population density | 1,774 per km² | AreaSearch estimate, Aug 2026, from the ABS June 2025 base | 66th percentile nationally |
| Average yearly growth, 2020 to 2025 | -0.2% | ABS estimated resident population series to June 2025 | |
| Average yearly growth, 2015 to 2025 | -0.1% | ABS estimated resident population series to June 2025 |
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Population at the 2021 Census | 13,440 | 2021 Census | |
| Residents added since the 2021 Census | 192 | AreaSearch estimate, Aug 2026, against the 2021 Census | |
| Average yearly growth, 2022 to 2025 | +0.6% | ABS estimated resident population series to June 2025 | |
| Population growth, 2024 to 2025 | +0.2% | ABS estimated resident population series to June 2025 | |
| Land area | 7.68 km² | AreaSearch boundary analysis |
Total population for the Castle Cove - Northbridge SA2 was estimated to be approximately 13,632 as at Aug 2026. This is based upon an estimated resident population of 13,592 from the ABS up to June 2025.
The castle cove - northbridge sa2 has added approximately 192 people and shown a 1.43% increase from the 13,440 people recorded at the 2021 Census period.
The population density in the Castle Cove - Northbridge SA2 is estimated at 1,775 persons per square kilometre based on the latest population estimate.
Over the past 10 years, the population in the Castle Cove - Northbridge SA2 has shown a compound annual growth rate of -0.1% per annum.
Population growth in the Castle Cove - Northbridge SA2 is driven by: Overseas migration (100.0%), Natural increase (0.0%), Interstate migration (0.0%). The primary driver is Overseas migration, contributing 100.0% of overall population gains.
Castle Cove - Northbridge hosts a notably older demographic compared to the national average.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Median age | 45 years | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | 78th percentile nationally |
| Aged 65 and over | 22.2% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Children under 15 | 16.3% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 15 to 34 | 22.5% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 25 to 64 | 45.3% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate |
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Median age at the 2021 Census | 45 years | 2021 Census | |
| Aged 0 to 4 | 2.9% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 5 to 14 | 13.4% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 15 to 24 | 16.3% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 25 to 34 | 6.2% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 35 to 44 | 9.4% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 45 to 54 | 15.5% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 55 to 64 | 14.2% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 65 to 74 | 10.8% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 75 to 84 | 8.0% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 85 and over | 3.5% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate |
AreaSearch estimates the median age in the Castle Cove - Northbridge SA2 at 45 years as at August 2026. That is in line with the 2021 Census figure of 45 years, on an age profile AreaSearch re-estimates for population change recorded since the Census.
At an estimated 45 years as at August 2026, Castle Cove - Northbridge is 8 years older than the Greater Sydney 2021 Census average (37 years) and 7 years older than the national Census average (38 years).
On AreaSearch estimates updated to August 2026, the most over-represented age group in the Castle Cove - Northbridge SA2 compared to the Greater Sydney region is the 55 - 64 group, making up 14.2% of the population.
On AreaSearch estimates updated to August 2026, the most under-represented age group in the Castle Cove - Northbridge SA2 compared to the Greater Sydney region is the 25 - 34 group, making up 6.2% of the population.
Yes, certain age groups in the Castle Cove - Northbridge SA2 show significant variance compared to Greater Sydney. The most over-represented age groups are 85+ year-olds (3.5% vs 2.1%) and 75-84 year-olds (8.0% vs 5.3%). The most under-represented age groups are 25-34 year-olds (6.2% vs 16.2%) and 0-4 year-olds (2.9% vs 5.5%).
AreaSearch estimates children aged 0-14 years at 16.3% of the population in the Castle Cove - Northbridge SA2 as at August 2026.
AreaSearch estimates people aged 65 and over at 22.2% of the population in the Castle Cove - Northbridge SA2 as at August 2026.
The economic profile demonstrates exceptional strength, placing the area among the top 7% nationally based on comprehensive AreaSearch income analysis.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Median taxable income (ATO) | $80,868 a year | ATO FY-24, annual | 96th percentile nationally |
| Average taxable income | $169,955 a year | ATO FY-24, annual |
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Census household income / week | $3,987 | 2021 Census, weekly | 99th percentile nationally |
| Census personal income / week | $1,355 | 2021 Census, weekly | 96th percentile nationally |
| High-income households | 59.8% | 2021 Census | |
| Census family income / week | $4,641 | 2021 Census, weekly | |
| Low-income households | 10.6% | 2021 Census |
Based on Wage Price Index adjustments to June 2026, the estimated median taxable income in the Castle Cove - Northbridge SA2 is approximately $86,027. The official ATO data from FY-24 recorded a median of $80,868.
Based on Wage Price Index adjustments to June 2026, the estimated average taxable income in the Castle Cove - Northbridge SA2 is approximately $180,798. The official ATO data from FY-24 recorded an average of $169,955.
Based on Wage Price Index adjustments to June 2026, the estimated median taxable income in the Castle Cove - Northbridge SA2 is approximately $86,027 compared to $67,214 in Greater Sydney. The official ATO data from FY-24 shows $80,868 and $63,183 respectively.
Based on Wage Price Index adjustments to June 2026, the estimated average taxable income in the Castle Cove - Northbridge SA2 is approximately $180,798 compared to $92,214 in Greater Sydney. The official ATO data from FY-24 shows $169,955 and $86,684 respectively.
As per the 2021 Census, the weekly household income bracket containing the largest proportion of the Castle Cove - Northbridge SA2's households (~49.9% / 2,201 households) is the $4000+ cohort.
The largest weekly household income cohort in the Castle Cove - Northbridge SA2 is the $4000+ group, representing about 49.9% of households. In comparison, Greater Sydney's largest household income cohort is the $1,500 - 2,999 group, representing 30.9% of its households, according to the 2021 Census.
The 2021 Census data indicates that the median household income in the Castle Cove - Northbridge SA2 is $3,987/wk.
According to the 2021 Census, the median family income in the Castle Cove - Northbridge SA2 is $4,641/wk.
The 2021 Census shows that the median personal income in the Castle Cove - Northbridge SA2 is $1,355/wk.
As per AreaSearch's latest postcode level ATO data released for FY-24, the Castle Cove - Northbridge SA2's median income among taxpayers is $80,868, with an average of $169,955. This is among the top percentile nationally, and compares to Greater Sydney's median of $63,183 and average of $86,684. Based on Wage Price Index growth of 6.38% since FY-24, current estimates would be approximately $86,027 (median) and $180,798 (average) as of June 2026.
The estimated disposable income in the Castle Cove - Northbridge SA2 is $15,202 per year according to AreaSearch analysis.
The castle cove - northbridge sa2's disposable income is $15,202 compared to $7,412 for Greater Sydney, based on AreaSearch analysis.
Employment conditions in Castle Cove - Northbridge demonstrate exceptional strength compared to most Australian markets.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Unemployment rate | 2.0% | ABS and DEWR labour data, compiled by AreaSearch | |
| Workforce participation | 62.1% | ABS and DEWR labour data, compiled by AreaSearch | |
| Employed residents | 6,934 | ABS and DEWR labour data, compiled by AreaSearch | |
| Daytime population | 11,691 | AreaSearch estimate of residents and workers present on a weekday | |
| Labour force | 7,076 | ABS and DEWR labour data, compiled by AreaSearch |
As of June 2026, the Castle Cove - Northbridge SA2 has approximately 6,934 employed residents with an unemployment rate of 2.0%. This very low unemployment rate indicates a tight labour market with strong demand for workers. The area ranks in the top 25% nationally for employment performance, indicating a robust job market.
As of June 2026, the unemployment rate in the Castle Cove - Northbridge SA2 stands at 2.0%, which is 2.2 percentage points below Greater Sydney's rate of 4.2%. This lower unemployment rate suggests stronger local employment conditions. For comparison, the national unemployment rate is 4.2%.
The employment landscape in the Castle Cove - Northbridge SA2 is dominated by several key sectors. The largest employers are professional & technical (21.5% of employment), finance & insurance (14.9%), and health care & social assistance (12.2%). Other significant employers include education & training and retail trade.
Over the past year to June 2026, the Castle Cove - Northbridge SA2 has experienced employment growth, with total employment increasing while the labour force increased. As a result, the unemployment rate has fallen. By comparison, Greater Sydney saw employment increased and its unemployment rate dropped.
The workforce participation rate in the Castle Cove - Northbridge SA2 is 62.1%, which represents the proportion of working-age residents who are either employed or actively seeking work. This healthy participation rate reflects good employment opportunities and workforce engagement. The local rate trailing the Greater Sydney average of 68.9%, suggesting potential for increased workforce participation.
The castle cove - northbridge sa2 shows notable specialisation in professional & technical, which employs 21.5% of the local workforce compared to 11.5% across Greater Sydney. This concentration suggests the area has developed competitive advantages in this sector. The area also shows above-average employment in 2 other sectors, contributing to a distinctive economic profile.
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The castle cove - northbridge sa2's employment market shows strong performance nationally, ranking in the top 25% of areas assessed by AreaSearch. This indicates robust employment conditions and economic vitality compared to other regions. Recent job advertisement trends show the broader employment region saw a 3.8% decline, ranking 32nd out of 37 regions nationally.
Castle Cove - Northbridge demonstrates exceptional educational outcomes, ranking among the top 5% of areas nationally based on AreaSearch's comprehensive analysis of qualification and performance metrics.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Bachelor qualifications | 36.1% | 2021 Census | 95th percentile nationally |
| Postgraduate qualifications | 17.1% | 2021 Census | 93rd percentile nationally |
| University qualifications | 57.1% | 2021 Census | |
| Vocational qualifications | 7.1% | 2021 Census | 2nd percentile nationally |
| Graduate diploma or certificate | 3.9% | 2021 Census | 82nd percentile nationally |
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Advanced diploma or diploma | 9.6% | 2021 Census | 27th percentile nationally |
| No post-school qualification | 26.2% | 2021 Census | |
| Residents attending an educational institution | 33.6% | 2021 Census | |
| Residents attending university or other higher education | 6.8% | 2021 Census | 77th percentile nationally |
| Residents attending primary school | 11.0% | 2021 Census | 66th percentile nationally |
| Residents attending secondary school | 11.7% | 2021 Census | 97th percentile nationally |
57.1% of people aged 15 and over in the Castle Cove - Northbridge SA2 have university qualifications, compared to 38.0% in Greater Sydney.
26.2% of people aged 15 and over in the Castle Cove - Northbridge SA2 have no formal qualifications, compared to 34.2% in Greater Sydney.
The castle cove - northbridge sa2 ranks in the 95th percentile nationally for education based on AreaSearch's analysis of qualification and performance metrics.
The most common qualifications in the Castle Cove - Northbridge SA2 are: Bachelor Degree (36.1%), Postgraduate (17.1%), Advanced Diploma (9.6%).
33.6% of the population in the Castle Cove - Northbridge SA2 is currently engaged in formal education, including 11.0% in primary school, 11.7% in secondary school, 6.8% at university (all shares of total residents).
The average ICSEA (Index of Community Socio-Educational Advantage) score for schools in the Castle Cove - Northbridge SA2 is 1163, indicating above-average socio-educational advantage compared to the national average of 1000.
There are 7 schools within the Castle Cove - Northbridge SA2, with a combined enrollment of approximately 1,252 students.
The castle cove - northbridge sa2 includes 5 primary schools, 2 combined schools.
Castle Cove - Northbridge features high concentrations of couples with children and family households but relatively few group households, with a larger average household size than Greater Sydney.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Median household size | 2.9 people | 2021 Census | 82nd percentile nationally |
| Lone-person households | 15.8% | 2021 Census | 14th percentile nationally |
| Couples with children | 48.3% | 2021 Census | 93rd percentile nationally |
| Couples without children | 26.3% | 2021 Census | 45th percentile nationally |
| One-parent families | 7.9% | 2021 Census | 17th percentile nationally |
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Group households | 1.1% | 2021 Census | 5th percentile nationally |
| Households at the 2021 Census | 4,410 | 2021 Census | |
| Estimated households | 4,473 | AreaSearch estimate, Aug 2026 | |
| Family households | 83.1% | 2021 Census | 88th percentile nationally |
| Average children per family | 1.6 per family | 2021 Census | 39th percentile nationally |
As of the 2021 Census, the Castle Cove - Northbridge SA2 had 4,410 households. Based on population growth patterns, this has grown by approximately 1.4% to an estimated 4,473 households today.
The average household size in the Castle Cove - Northbridge SA2 is 2.9 people. This compares to 2.7 in Greater Sydney and reflects the area's household composition mix.
Family households dominate at 83.1% of all households. Non-family households consist of lone person households (15.8%), group households (1.1%), and other household types (0.0%).
Of the 3,665 family households, couples with children account for 48.3% of all households, couples without children at home 26.3%, and single parent families 7.9%. This mix shapes local demand for schools, family services, and housing types.
Compared to Greater Sydney, the Castle Cove - Northbridge SA2 shows distinct household patterns. Family households are notably over-represented at 83.1% (versus 72.6% in Greater Sydney). Conversely, lone person households are under-represented at 15.8% compared to 23.2% in Greater Sydney. This family-oriented profile influences local demand for family homes, schools, and children's services.
Families in the Castle Cove - Northbridge SA2 have an average of 1.6 children, slightly above the Greater Sydney average of 1.5. This influences local demand for child-related services and larger family homes.
Marriage patterns reveal 60.7% of the adult population are currently married, while 27.2% have never married. This compares to 48.3% married and 36.4% never married across Greater Sydney.
Single-person households represent 15.8% of all households in the Castle Cove - Northbridge SA2, notably lower than the average for Greater Sydney of 23.2%. This affects demand for smaller dwellings and single-person accommodation.
Group households (unrelated people sharing) account for 1.1% of households, below the Greater Sydney average of 4.2%. This lower rate suggests less student or young professional shared accommodation.
The level of cultural diversity witnessed in Castle Cove - Northbridge was found to be above average when compared nationally for a number of language and cultural background related metrics.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Born overseas | 33.2% | 2021 Census | 70th percentile nationally |
| Speak another language at home | 22.6% | 2021 Census | 66th percentile nationally |
| English only at home | 77.4% | 2021 Census | 33rd percentile nationally |
| Australian citizens | 89.7% | 2021 Census | 73rd percentile nationally |
| Born in Australia | 66.8% | 2021 Census | 29th percentile nationally |
| Aboriginal and Torres Strait Islander residents | 0.2% | 2021 Census | 5th percentile nationally |
Castle Cove - Northbridge was found to be more culturally diverse than the vast majority of local markets, with 22.6% of its population speaking a language other than English at home and 33.2% born overseas.
The main religion in Castle Cove - Northbridge was found to be Christianity, which makes up 52.4% of people in Castle Cove - Northbridge. However, the most apparent overrepresentation was in Judaism, which comprises 2.0% of the population, compared to 0.8% across Greater Sydney.
In terms of ancestry (country of birth of parents), the top three represented groups in Castle Cove - Northbridge are English, comprising 24.4% of the population, which is substantially higher than Greater Sydney's 19.0%, Australian, comprising 20.1% of the population, and Chinese, comprising 10.8% of the population. Additionally, there are notable divergences in the representation of certain other ethnic groups: Hungarian is notably overrepresented at 0.7% of Castle Cove - Northbridge (vs 0.3% across Greater Sydney), French at 0.9% (vs 0.5%) and Russian at 0.6% (vs 0.4%).
33.2% of the Castle Cove - Northbridge SA2 population was born overseas, compared to 40.5% across Greater Sydney.
22.6% of the population in the Castle Cove - Northbridge SA2 speaks a language other than English at home, compared to 39.5% in Greater Sydney.
0.2% of the Castle Cove - Northbridge SA2 population identifies as Australian Aboriginal, compared to 1.3% in Greater Sydney.
89.7% of the Castle Cove - Northbridge SA2 population holds citizenship, compared to 80.8% in Greater Sydney.
04Place
Housing, health, transport, local services and the reports on them.
Castle Cove - Northbridge is characterized by a predominantly suburban housing profile, with above-average rates of outright home ownership.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Rented homes | 15.4% | 2021 Census | 13th percentile nationally |
| Owned outright | 49.8% | 2021 Census | 91st percentile nationally |
| Detached houses | 84.5% | 2021 Census | 47th percentile nationally |
| Median mortgage repayment | $4,333 a month | 2021 Census, monthly | 99th percentile nationally |
| Owned with a mortgage | 34.8% | 2021 Census | 50th percentile nationally |
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Semi-detached, terrace and townhouses | 4.9% | 2021 Census | 34th percentile nationally |
| Median weekly rent paid, 2021 Census | $850 | 2021 Census, weekly | 99th percentile nationally |
| Median rent as a share of median household income | 21.3% | 2021 Census, ratio calculated by AreaSearch | 56th percentile nationally |
| Median mortgage repayment as a share of household income | 25.1% | 2021 Census, ratio calculated by AreaSearch | 59th percentile nationally |
| People per bedroom | 0.8 per bedroom | 2021 Census | 47th percentile nationally |
In the Castle Cove - Northbridge SA2, 49.8% of homes are owned outright, 34.8% are owned with a mortgage, and 15.4% are rented.
According to the latest data, 84.5% of dwellings in the Castle Cove - Northbridge SA2 are houses.
In the Castle Cove - Northbridge SA2, 10.3% of dwellings are apartments or units, with an additional 4.9% being semi-detached dwellings.
Outright home ownership in the Castle Cove - Northbridge SA2 stands at 49.8%, compared to 28.7% in Greater Sydney.
The median monthly mortgage repayment in the Castle Cove - Northbridge SA2 is $4,333, compared to $2,427 in Greater Sydney.
The aggregate monthly housing cost in the Castle Cove - Northbridge SA2 is $2,075, which represents the average monthly cost across all housing types.
In the Castle Cove - Northbridge SA2, households with mortgages typically spend 25.1% of their income on mortgage repayments, while renters spend 21.3% of their income on rent.
The average persons per bedroom ratio in the Castle Cove - Northbridge SA2 is 0.8, indicating the level of household density.
Housing affordability in the Castle Cove - Northbridge SA2 shows mortgage holders spending 25.1% of income on repayments (vs 27.0% in Greater Sydney), while renters spend 21.3% of income on rent (vs 22.6% in Greater Sydney).
The dwelling mix in the Castle Cove - Northbridge SA2 consists of 84.5% detached houses, 4.9% semi-detached dwellings, 10.3% apartments, and 0.3% other dwelling types.
Housing in Castle Cove - Northbridge consumes approximately 12.0% of median household income ($17,264 monthly), indicating costs are highly affordable. The generally accepted benchmark is that housing should not exceed 30% of household income.
Recent development applications in Castle Cove - Northbridge show attached dwellings contributing 61% of approvals compared to 16% of existing stock, while detached houses represent 39% of applications versus 84% of current dwellings. This suggests increasing densification. Housing density growth is around the national average.
Castle Cove - Northbridge's residents boast exceedingly positive health performance metrics relative to locations nationally with very low prevalence of common health conditions across all age groups.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Private health cover | 87.9% | ATO FY 2024, private health cover | 99th percentile nationally |
| No long-term health condition | 76.0% | 2021 Census | 83rd percentile nationally |
| Need help with daily activities | 3.9% | 2021 Census | 22nd percentile nationally |
| No long-term health condition, under 65 | 83.5% | 2021 Census | 91st percentile nationally |
| Three or more long-term health conditions, under 65 | 0.4% | 2021 Census | 4th percentile nationally |
Around 87.9% of people in the Castle Cove - Northbridge SA2 are covered by private health insurance, which compares to 59.8% in Greater Sydney.
In the Castle Cove - Northbridge SA2, 3.9% of the population is identified as requiring ongoing medical assistance. By comparison, 5.2% of people in Greater Sydney require similar assistance.
6.2% of people in the Castle Cove - Northbridge SA2 are diagnosed with asthma. In comparison, 6.4% of the population across Greater Sydney is affected by asthma.
Diabetes affects 2.5% of the Castle Cove - Northbridge SA2 population, while in Greater Sydney, 4.3% of people are diagnosed with diabetes.
3.3% of people in the Castle Cove - Northbridge SA2 have heart disease. Across Greater Sydney,3.2% of the population is affected by heart disease.
In the Castle Cove - Northbridge SA2, 87.9% of the population are estimated to have private health insurance. Comparatively, Greater Sydney sees an estimated private health coverage rate of 59.8%.
Transport servicing is good compared to other areas nationally based on assessment of service frequency, route connectivity and accessibility.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Transport access | 74 out of 100 | AreaSearch transport analysis of timetable data | 74th percentile nationally |
| Public transport stops | 117 | Public transport timetable (GTFS) data, compiled by AreaSearch | 79th percentile nationally |
| Weekly public transport trips | 3,093 | Public transport timetable (GTFS) data, compiled by AreaSearch | 63rd percentile nationally |
| People per public transport stop | 117 | Public transport timetable (GTFS) data, compiled by AreaSearch | |
| Public transport routes | 55 | Public transport timetable (GTFS) data, compiled by AreaSearch |
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Vehicles per dwelling | 1.6 per dwelling | 2021 Census | |
| Working residents who worked from home | 64.8% | 2021 Census, taken during COVID-19 restrictions |
There are 117 public transport stops within the Castle Cove - Northbridge SA2.
The Castle Cove - Northbridge SA2 has 3,093 weekly trips across 55 routes, averaging 441 trips per day.
On average, residential properties are 151 metres from the nearest transport stop.
From the typical resident, the nearest child care centre is 433 m away and the nearest school 483 m.
Distance from the typical resident to the nearest of each service. Every bar starts at 0 m. The nearest is orange.
Public transport 117 stops nearby, 3,093 weekly trips, access rating 74 out of 100.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Amenity score | 70 out of 100 | AreaSearch proximity analysis | 70th percentile nationally |
| Nearest child care | 433 m | AreaSearch proximity analysis, from the typical resident | |
| Nearest school | 483 m | AreaSearch proximity analysis, from the typical resident | |
| Nearest dentist | 631 m | AreaSearch proximity analysis, from the typical resident | |
| Nearest GP | 633 m | AreaSearch proximity analysis, from the typical resident |
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Nearest fitness centre | 786 m | AreaSearch proximity analysis, from the typical resident | |
| Nearest pharmacy | 873 m | AreaSearch proximity analysis, from the typical resident | |
| Nearest supermarket | 1.0 km | AreaSearch proximity analysis, from the typical resident | |
| Nearest shopping centre | 1.4 km | AreaSearch proximity analysis, from the typical resident | |
| Nearest bank | 2.4 km | AreaSearch proximity analysis, from the typical resident | |
| Nearest hospital | 3.4 km | AreaSearch proximity analysis, from the typical resident | |
| Nearest government service | 3.6 km | AreaSearch proximity analysis, from the typical resident |
Sector reports that go deeper on these services: child care, medical, retail, aged care and specialist disability accommodation (SDA). There is 1 long day care centre with 40 places in Castle Cove - Northbridge, about 9.8 children aged 0-4 per place.
Short silent previews of sample pages. Sector reports are ordered for a catchment you draw, not for the suburb as a whole.
05Reports and tools
Order a report and find more tools.
An area report on Castle Cove - Northbridge is built to order and emailed to you.
Ordered reports
The other sector reports are ordered on a custom catchment: draw your own area to add them. The order window shows the estimate before you place the order.
Order a reportShort silent previews of sample pages. Base and Child Care can be ordered for Castle Cove - Northbridge.
06About this profile
Where the figures come from, downloads and nearby areas.
On AreaSearch's development drivers ranking, residential development activity is lower than average in Castle Cove - Northbridge compared with local real estate markets nationally.
Castle Cove - Northbridge ranks in the 82nd percentile nationally for infrastructure.
No headline figures are reported for this area.
Castle Cove - Northbridge's resilient property market has recorded 137 sales in the 12 months to September 2026, comprising 99% residential and 1% commercial transactions.
Castle Cove - Northbridge is positioned among the lower quartile of areas assessed nationally for population growth based on AreaSearch's assessment of recent, and medium term trends.
Castle Cove - Northbridge hosts a notably older demographic compared to the national average.
The economic profile demonstrates exceptional strength, placing the area among the top 7% nationally based on comprehensive AreaSearch income analysis.
Employment conditions in Castle Cove - Northbridge demonstrate exceptional strength compared to most Australian markets.
Castle Cove - Northbridge demonstrates exceptional educational outcomes, ranking among the top 5% of areas nationally based on AreaSearch's comprehensive analysis of qualification and performance metrics.
Castle Cove - Northbridge features high concentrations of couples with children and family households but relatively few group households, with a larger average household size than Greater Sydney.
The level of cultural diversity witnessed in Castle Cove - Northbridge was found to be above average when compared nationally for a number of language and cultural background related metrics.
Castle Cove - Northbridge is characterized by a predominantly suburban housing profile, with above-average rates of outright home ownership.
Castle Cove - Northbridge's residents boast exceedingly positive health performance metrics relative to locations nationally with very low prevalence of common health conditions across all age groups.
Transport servicing is good compared to other areas nationally based on assessment of service frequency, route connectivity and accessibility.
Amenity provision was found to be above the typical area assessed nationally by AreaSearch, based on counts and proximity analysis.
Castle Cove - Northbridge has an estimated 13,632 residents, up 1.4% since the 2021 Census, with 165 projects tracked in the area around Castle Cove - Northbridge.
Latest estimate as at Aug 2026; other figures from the 2021 Census, ATO FY-24 and AreaSearch estimates where labelled. Updated 14 Oct 2026.
Sources: ABS Census 2021, ABS estimated resident population, ATO taxation statistics, state rental bonds and property sales records where published, and AreaSearch analysis for Castle Cove - Northbridge.
Data currency
Refreshed . Sales to Oct 2026, rents to Jun 2026, population and age estimated to Aug 2026, taxable income FY 2024 and projects to Jul 2026. Housing, households and cultural diversity are from the 2021 Census (next update with the 2026 Census results).
Infrastructure projects and development applications also include sites in the surrounding area, and are labelled as such. Other sections were compiled 14 Oct 2026 from sources that update on their own cycles; "See the evidence" lists each source and its cycle.
SA2 boundaries are defined by the Australian Bureau of Statistics and are designed to represent communities for statistical reporting (for example census and ERP).
Suburbs and Localities (SAL) represent commonly-used suburb or locality names (postal-style areas) and may use different geographic boundaries. For a complete picture, consider both boundary types where available.
Main sources: ABS, Geoscience Australia, GNAF, ATO, State governments, Valuer General, Rental Board and Infrastructure Australia.
Cross-check us. The Census baseline for this boundary is at ABS 2021 Census QuickStats (121011683). QuickStats reports 2021 only; the figures on this page are more current wherever the ledger shows a later date.
This page uses ABS Statistical Area Level 2 (SA2) boundaries for statistical reporting (for example census and ERP). SA2 areas can differ materially from Suburbs and Localities (SAL) boundaries, even when they share similar names, because they are defined for different purposes and often use different geographic boundaries.
AreaSearch compiles this page from official and industry sources, including ABS, Geoscience Australia, GNAF, ATO, State governments, Valuer General, Rental Board and Infrastructure Australia, then calculates statistics for the boundary shown, and ranks, growth rates and benchmarks itself. Property sales come from the state valuation authority, rents from state rental bond lodgements, development applications from council and state planning portals, school data from ACARA, and public transport from state transport departments. Infrastructure projects and development applications also include sites in the surrounding area, labelled as such.
No. Most of this page is built beyond the Census. Dated for this area: population (Aug 2026), age profile (Aug 2026), infrastructure projects (Jul 2026) and income (FY 2024). Compiled with this profile from sources that publish on their own cycles: development and approvals, property sales and rents, employment, education, transport, health and services and amenities. Only housing, households and cultural diversity remain wholly Census-based, because no more current small-area dataset exists for those measures.
Key demographics and figures for Castle Cove - Northbridge from the 2021 Census, ATO taxpayer data and AreaSearch estimates and analysis. Each topic has its own table of key figures beside the section it belongs to, and each row names its source and date. The percentile compares Castle Cove - Northbridge with every neighbourhood-sized area across Australia (ABS SA2 areas): a higher percentile means more of that measure than most, not necessarily better.
Source: AreaSearch (areasearch.com.au) compiled from ABS Census 2021, ATO and other public sources.
