Suburb profile · Rest of SA
Williamstown (SA) has an estimated 3,157 residents, up 5.9% since the 2021 Census, with 24 projects tracked in the area around Williamstown (SA).
Updated 14 Oct 2026.
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Located 39 kilometres northeast from Adelaide CBD, the suburb of Williamstown (SA) is home to an estimated population of around 3,157 as of Aug 2026 according to AreaSearch analysis, which is formulated from annual SA2-level ERP releases and quarterly updates from the national address file. This represents an addition of 176 people (5.9%) since the 2021 Census recorded 2,981 people, with local expansion patterns displaying moderate growth over recent years. Demographically, the community is characterised by a high proportion of married families, a prominent representation of children aged 5 to 14yo, and an older population profile relative to nationwide averages, showing a median age of 42.
The local economic and residential landscape of the suburb of Williamstown (SA) is predominantly detached housing led, supported by strong mortgage holder representation. Employment across the community features an elevated construction employment share alongside a notable utilities employment base.
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01Profile
The analysis, national rankings and who lives there.
Located 39 kilometres northeast from Adelaide CBD, the suburb of Williamstown (SA) is home to an estimated population of around 3,157 as of Aug 2026 according to AreaSearch analysis, which is formulated from annual SA2-level ERP releases and quarterly updates from the national address file. This represents an addition of 176 people (5.9%) since the 2021 Census recorded 2,981 people, with local expansion patterns displaying moderate growth over recent years. Demographically, the community is characterised by a high proportion of married families, a prominent representation of children aged 5 to 14yo, and an older population profile relative to nationwide averages, showing a median age of 42.
The local economic and residential landscape of the suburb of Williamstown (SA) is predominantly detached housing led, supported by strong mortgage holder representation. Employment across the community features an elevated construction employment share alongside a notable utilities employment base.
Estimated resident population by year (ABS, not Census counts): 2,484 in 2006 and 3,134 in 2025. The dashed segment ends at the AreaSearch estimate for Aug 2026: 3,157 (ABS June 2025 base).
Share of residents in each age band (ABS age profile, scaled to the Aug 2026 AreaSearch estimate). Largest: 5 to 14, 14.1%.
Share of households in each weekly household income band (2021 Census). Largest: $1,500 - 2,999, 36%.
Williamstown (SA) ranks in the 92nd percentile nationally for employment drivers and the 62nd for population growth.
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 Williamstown (SA) is $460 a week, down 3.2% over 12 months to Jun 2026 and 11% above Regional SA.
11% above Regional SA on median weekly rent
Median weekly rent by year, lodged bonds. Houses (solid line): $380 in 2020, $525 in 2026; Units (dashed orange line): $295 in 2020, $425 in 2026. The latest is to Jun 2026.
Some rents are estimated from nearby areas.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Median rent | $460 a week | Rental bond lodgements, median for the 12 months to Jun 2026 | |
| Change in median rent over 12 months | -3.2% | Rental bond lodgements, median for the 12 months to Jun 2026 | |
| Median rent, houses | $525 a week | Rental bond lodgements, median for the 12 months to Jun 2026 | |
| Change in median rent for houses over 12 months | +10.5% | Rental bond lodgements, median for the 12 months to Jun 2026 | |
| Median rent, units | $425 a week | Rental bond lodgements, median for the 12 months to Jun 2026 |
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Median rent, Barossa | $530 a week | Rental bond lodgements, median for the 12 months to Jun 2026 | |
| Change in median rent, Barossa, over 12 months | +7.6% | Rental bond lodgements, median for the 12 months to Jun 2026 | |
| Median rent, Regional SA | $415 a week | Rental bond lodgements, median for the 12 months to Jun 2026 | |
| Change in median rent, Regional SA, over 12 months | +8.0% | Rental bond lodgements, median for the 12 months to Jun 2026 | |
| Median rent, SA | $546 a week | Rental bond lodgements, median for the 12 months to Jun 2026 | |
| Change in median rent, SA, over 12 months | +6.4% | 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 46 tracked applications: 29 approved, 12 under assessment, 5 other (refused, withdrawn or no status).
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AreaSearch tracks 24 projects in and around Williamstown (SA), 9 of them under construction.
Subdivision of an 8,090 m2 residential allotment at 57 Queen Street, Williamstown within The Barossa Council into approximately 11 residential lots. The 0.80 hectare site has been marketed as a start up development opportunity and is identified by OpenLot as a small estate with 11 new homes in planning.
George Street Estate is a proposed 6.22 hectare residential subdivision on Lot 9 George Street in Williamstown, within The Barossa Council area. The land has been marketed as one of the last major land development opportunities in the town, with concept plans showing a new house and land estate subject to council approval and planning consent.
A major residential growth area spanning approximately 700 hectares in Adelaide's northern corridor, centred on the Angle Vale township 31 kilometres from the CBD.
One of Australia's largest urban renewal projects, covering about 1,000 hectares around 30 km north of Adelaide. A partnership between Renewal SA, the SA Housing Trust, the City of Playford and the community, it is renewing Davoren Park and Smithfield Plains and delivering greenfield development at Andrews Farm, Munno Para and Penfield since 2008.
Development of 62 affordable 2-3 bedroom homes for low-income earners and first home buyers on a 3.25-hectare site. Civil works completed as of May 2025 with home construction underway. The project includes a large natural reserve along Craigmore Road preserving established trees for community use.
A major water security program investigating the delivery of up to 13 GL per year of climate-independent recycled water from the Bolivar Wastewater Treatment Plant to the Barossa and Eden Valleys.
Construction is underway on a new two-storey education and wellbeing building at Catherine McAuley School. The project includes three permanent classrooms replacing transportables, a wellbeing centre with therapy consultation rooms, a student services hub, a dedicated playgroup space, upgraded outdoor learning areas with a mini amphitheatre and native…
Expansion of the Angle Vale township adding approximately 700 hectares of new development near the Gawler River (north), Northern Expressway (east) and Curtis Road (south). The Playford Growth Area Structure Plan underpins the rezoning to accommodate future population and employment growth across the cities of Playford and Salisbury.
51 affordable homes featuring mix of two and three-bedroom single-storey homes designed around a central reserve. Partnership between SA Housing Trust and Fairland Group.
Stage Two of Zaytouna Estate comprises 26 residential allotments nestled amidst rolling countryside with sweeping views in Craigmore. The subdivision features level and split-level allotments ranging from 279 to 678 square meters on 1.95 hectares of premium land.
Major facility upgrade including a new 2-storey learning centre with general learning areas, dance studio, visual arts and music rooms, breakout spaces and staff preparation areas.
Kalina Estate is a master planned community at the corner of Stebonheath Road and Curtis Road in Munno Para West, being delivered by Fairmont Homes Group. The project will deliver around 1,200 house and land lots along with local parks, wetlands and a small future retail precinct as part of the broader residential growth in Adelaide's northern suburbs.
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 14 projects in and around the area that are not yet completed and have one: 2025 1, 2026 4, 2027 2, 2028 1, 2029 1, 2030 1, 2031 0, 2032 1, 2033 1, 2034 0, 2035 2. 4 have no completion year.
AreaSearch has tracked 46 substantial development applications lodged in and around Williamstown (SA) over the past 5 years, 13 in the last 12 months; 12 are recorded as under assessment. Coverage varies by council.
Applications per year (dashed: part year): 2021 (part year) 2, 2022 11, 2023 9, 2024 5, 2025 6, 2026 (to Nov) 13.
Key application 45 -63 Mount Crawford Rd, Williamstown Retail | $2.0m | 1 storey Under Assessment
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Tracked applications | 46 | Tracked by AreaSearch, in and around the area, last 5 years | |
| Tracked, last 12 months | 13 | Tracked by AreaSearch, in and around the area | |
| ABS building approvals | 2.8 per 1,000 people | ABS building approvals | 37th percentile nationally |
| Average approvals a year | 9 | ABS building approvals | 18th percentile nationally |
| Applications approved | 29 | Tracked by AreaSearch, in and around the area, last 5 years | |
| Applications under assessment | 12 | Tracked by AreaSearch, in and around the area, last 5 years |
Key infrastructure and planning changes likely to influence the suburb of Williamstown include: Concordia Basic Infrastructure Scheme (Approved); Concordia Residential Development (Approved); Barossa Growth and Infrastructure Investment Strategy (Approved); Northern Adelaide Transport Study (Planning); and High Productivity Vehicle Network (HPVN) (Planning). These projects represent significant developments that will shape the area's future infrastructure landscape.
Infrastructure development impacting the suburb of Williamstown spans multiple sectors including Communities, Precincts & Urban Renewal, Transport & Logistics, and Residential Development, among others.
Infrastructure development activity impacting the suburb of Williamstown currently ranks below national averages at the 30th percentile.
On AreaSearch's development drivers ranking, residential development activity is lower than average in Williamstown compared with local real estate markets nationally.
Dwelling approval activity in the suburb of Williamstown area has seen 21 residential approvals over the past two financial years, based on AreaSearch's SA2 aggregation method. The suburb of Williamstown's current population of 3,157 has been supported by 9 approvals on average over recent years.
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Looking at development activity over the past five years, the suburb of Williamstown's approval levels have been below the yearly average of 9, indicating a recent decline in approval activity.
Over the past five years, the population in the suburb of Williamstown has grown by approximately 117 people, while 43 residential approvals were recorded. This equates to a ratio of 2.7 people added for each new dwelling approval. This indicates solid population growth supported by housing development activity.
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.
Population growth drivers in Williamstown are slightly above average based on AreaSearch's ranking of recent, and medium term trends.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Population | 3,157 | AreaSearch estimate, Aug 2026, from the ABS June 2025 base | |
| Growth since 2021 Census | +5.9% | AreaSearch estimate, Aug 2026, against the 2021 Census | 45th percentile nationally |
| Population density | 44 per km² | AreaSearch estimate, Aug 2026, from the ABS June 2025 base | 23rd percentile nationally |
| Average yearly growth, 2020 to 2025 | +0.8% | ABS estimated resident population series to June 2025 | |
| Average yearly growth, 2015 to 2025 | +0.9% | ABS estimated resident population series to June 2025 |
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Population at the 2021 Census | 2,981 | 2021 Census | |
| Residents added since the 2021 Census | 176 | AreaSearch estimate, Aug 2026, against the 2021 Census | |
| Average yearly growth, 2022 to 2025 | +0.7% | ABS estimated resident population series to June 2025 | |
| Population growth, 2024 to 2025 | +0.1% | ABS estimated resident population series to June 2025 | |
| Land area | 71.85 km² | AreaSearch boundary analysis |
Total population for the suburb of Williamstown was estimated to be approximately 3,157 as at Aug 2026. This is based upon an estimated resident population of 3,134 from the ABS up to June 2025.
The suburb of williamstown has added approximately 176 people and shown a 5.90% increase from the 2,981 people recorded at the 2021 Census period.
The population density in the suburb of Williamstown is estimated at 44 persons per square kilometre based on the latest population estimate.
Over the past 10 years, the population in the suburb of Williamstown has shown a compound annual growth rate of 0.9% per annum.
Population growth in the suburb of Williamstown is driven by: Interstate migration (40.0%), Overseas migration (30.0%), Natural increase (29.0%). The primary driver is Interstate migration, contributing 40.0% of overall population gains.
Williamstown's median age exceeds the national pattern.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Median age | 42 years | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | 67th percentile nationally |
| Aged 65 and over | 19.3% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Children under 15 | 18.5% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 15 to 34 | 22.6% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 25 to 64 | 49.5% | 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 | 42 years | 2021 Census | |
| Aged 0 to 4 | 4.4% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 5 to 14 | 14.1% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 15 to 24 | 13.0% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 25 to 34 | 9.6% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 35 to 44 | 12.4% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 45 to 54 | 13.4% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 55 to 64 | 14.1% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 65 to 74 | 11.1% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 75 to 84 | 5.9% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate | |
| Aged 85 and over | 2.3% | ABS estimated resident population age profile (June 2025), scaled to the Aug 2026 AreaSearch estimate |
AreaSearch estimates the median age in the suburb of Williamstown at 42 years as at August 2026. That is in line with the 2021 Census figure of 42 years, on an age profile AreaSearch re-estimates for population change recorded since the Census.
At an estimated 42 years as at August 2026, Williamstown is 5 years younger than the Regional SA 2021 Census average (47 years) yet 4 years older than the national Census average (38 years).
On AreaSearch estimates updated to August 2026, the most over-represented age group in the suburb of Williamstown compared to the Regional SA region is the 5 - 14 group, making up 14.1% of the population.
On AreaSearch estimates updated to August 2026, the most under-represented age group in the suburb of Williamstown compared to the Regional SA region is the 75 - 84 group, making up 5.9% of the population.
Yes, certain age groups in the suburb of Williamstown show significant variance compared to Regional SA. The most under-represented age group is 75-84 year-olds (5.9% vs 9.6%).
AreaSearch estimates children aged 0-14 years at 18.5% of the population in the suburb of Williamstown as at August 2026.
AreaSearch estimates people aged 65 and over at 19.3% of the population in the suburb of Williamstown as at August 2026.
Income analysis reveals strong economic positioning, with the area outperforming 60% of locations assessed nationally by AreaSearch.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Median taxable income (ATO) | $61,174 a year | ATO FY-24, annual | 59th percentile nationally |
| Average taxable income | $70,570 a year | ATO FY-24, annual |
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Census household income / week | $1,782 | 2021 Census, weekly | 52nd percentile nationally |
| Census personal income / week | $813 | 2021 Census, weekly | 51st percentile nationally |
| High-income households | 22.6% | 2021 Census | |
| Census family income / week | $2,063 | 2021 Census, weekly | |
| Low-income households | 18.4% | 2021 Census |
Based on Wage Price Index adjustments to June 2026, the estimated median taxable income in the suburb of Williamstown is approximately $65,542. The official ATO data from FY-24 recorded a median of $61,174.
Based on Wage Price Index adjustments to June 2026, the estimated average taxable income in the suburb of Williamstown is approximately $75,609. The official ATO data from FY-24 recorded an average of $70,570.
Based on Wage Price Index adjustments to June 2026, the estimated median taxable income in the suburb of Williamstown is approximately $65,542 compared to $55,532 in Regional SA. The official ATO data from FY-24 shows $61,174 and $51,831 respectively.
Based on Wage Price Index adjustments to June 2026, the estimated average taxable income in the suburb of Williamstown is approximately $75,609 compared to $66,859 in Regional SA. The official ATO data from FY-24 shows $70,570 and $62,403 respectively.
As per the 2021 Census, the weekly household income bracket containing the largest proportion of the suburb of Williamstown's households (~36.0% / 383 households) is the $1,500 - 2,999 cohort.
The largest weekly household income cohort in the suburb of Williamstown is the $1,500 - 2,999 group, representing about 36.0% of households. In comparison, Regional SA's largest household income cohort is the $1,500 - 2,999 group, representing 27.5% of its households, according to the 2021 Census.
The 2021 Census data indicates that the median household income in the suburb of Williamstown is $1,782/wk.
According to the 2021 Census, the median family income in the suburb of Williamstown is $2,063/wk.
The 2021 Census shows that the median personal income in the suburb of Williamstown is $813/wk.
As per AreaSearch's latest postcode level ATO data released for FY-24, the suburb of Williamstown's median income among taxpayers is $61,174, with an average of $70,570. This is slightly lower than average on a national basis, and compares to Regional SA's median of $51,831 and average of $62,403. Based on Wage Price Index growth of 7.14% since FY-24, current estimates would be approximately $65,542 (median) and $75,609 (average) as of June 2026.
The estimated disposable income in the suburb of Williamstown is $6,744 per year according to AreaSearch analysis.
The suburb of williamstown's disposable income is $6,744 compared to $4,535 for Regional SA, based on AreaSearch analysis.
Employment conditions in Williamstown rank among the top 8% of areas assessed nationally.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Unemployment rate | 1.9% | ABS and DEWR labour data, compiled by AreaSearch | |
| Workforce participation | 69.0% | ABS and DEWR labour data, compiled by AreaSearch | |
| Employed residents | 1,733 | ABS and DEWR labour data, compiled by AreaSearch | |
| Daytime population | 2,591 | AreaSearch estimate of residents and workers present on a weekday | |
| Labour force | 1,767 | ABS and DEWR labour data, compiled by AreaSearch |
As of March 2026, the suburb of Williamstown has approximately 1,733 employed residents with an unemployment rate of 1.9%. 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 March 2026, the unemployment rate in the suburb of Williamstown stands at 1.9%, which is 3.5 percentage points below Regional SA's rate of 5.5%. This lower unemployment rate suggests stronger local employment conditions. For comparison, the national unemployment rate is 4.2%.
The employment landscape in the suburb of Williamstown is dominated by several key sectors. The largest employers are health care & social assistance (13.8% of employment), manufacturing (12.8%), and construction (12.6%). Other significant employers include education & training and retail trade.
Over the past year to March 2026, the suburb of Williamstown has experienced employment growth, with total employment increasing while the labour force increased. As a result, the unemployment rate has fallen. By comparison, Regional SA saw employment increased and its unemployment rate rose.
The workforce participation rate in the suburb of Williamstown is 69.0%, 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 leading the Regional SA average of 58.3%, indicating stronger workforce attachment in the local area.
The suburb of williamstown shows notable specialisation in construction, which employs 12.6% of the local workforce compared to 8.1% across Regional SA. 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 suburb of williamstown'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 experienced 24.5% growth, ranking 1st out of 37 regions nationally.
Williamstown shows below-average educational performance compared to national benchmarks, though pockets of achievement exist.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Bachelor qualifications | 12.8% | 2021 Census | 31st percentile nationally |
| Postgraduate qualifications | 2.1% | 2021 Census | 18th percentile nationally |
| University qualifications | 17.5% | 2021 Census | |
| Vocational qualifications | 32.4% | 2021 Census | 86th percentile nationally |
| Graduate diploma or certificate | 2.6% | 2021 Census | 57th percentile nationally |
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Advanced diploma or diploma | 10.7% | 2021 Census | 51st percentile nationally |
| No post-school qualification | 39.4% | 2021 Census | |
| Residents attending an educational institution | 27.3% | 2021 Census | |
| Residents attending university or other higher education | 3.0% | 2021 Census | 27th percentile nationally |
| Residents attending primary school | 12.0% | 2021 Census | 80th percentile nationally |
| Residents attending secondary school | 7.8% | 2021 Census | 45th percentile nationally |
17.5% of people aged 15 and over in the suburb of Williamstown have university qualifications, compared to 13.9% in Regional SA.
39.4% of people aged 15 and over in the suburb of Williamstown have no formal qualifications, compared to 47.1% in Regional SA.
The suburb of williamstown ranks in the 41th percentile nationally for education based on AreaSearch's analysis of qualification and performance metrics.
The most common qualifications in the suburb of Williamstown are: Certificate (32.4%), Bachelor Degree (12.8%), Advanced Diploma (10.7%).
27.3% of the population in the suburb of Williamstown is currently engaged in formal education, including 12.0% in primary school, 7.8% in secondary school, 3.0% at university (all shares of total residents).
The average ICSEA (Index of Community Socio-Educational Advantage) score for schools in the suburb of Williamstown is 1000, indicating below-average socio-educational advantage compared to the national average of 1000.
There are 1 schools within the suburb of Williamstown, with a combined enrollment of approximately 190 students.
The suburb of williamstown includes 1 primary school.
Williamstown features high concentrations of family households and couples without children but relatively few group households, with a larger average household size than Regional SA.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Median household size | 2.7 people | 2021 Census | 71st percentile nationally |
| Lone-person households | 19.8% | 2021 Census | 28th percentile nationally |
| Couples with children | 38.1% | 2021 Census | 74th percentile nationally |
| Couples without children | 31.8% | 2021 Census | 79th percentile nationally |
| One-parent families | 9.0% | 2021 Census | 30th percentile nationally |
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Group households | 0.9% | 2021 Census | 4th percentile nationally |
| Households at the 2021 Census | 1,064 | 2021 Census | |
| Estimated households | 1,127 | AreaSearch estimate, Aug 2026 | |
| Family households | 79.2% | 2021 Census | 79th percentile nationally |
| Average children per family | 1.8 per family | 2021 Census | 74th percentile nationally |
As of the 2021 Census, the suburb of Williamstown had 1,064 households. Based on population growth patterns, this has grown by approximately 5.9% to an estimated 1,127 households today.
The average household size in the suburb of Williamstown is 2.7 people. This compares to 2.3 in Regional SA and reflects the area's household composition mix.
Family households dominate at 79.2% of all households. Non-family households consist of lone person households (19.8%), group households (0.9%), and other household types (0.0%).
Of the 843 family households, couples with children account for 38.1% of all households, couples without children at home 31.8%, and single parent families 9.0%. This mix shapes local demand for schools, family services, and housing types.
Compared to Regional SA, the suburb of Williamstown shows distinct household patterns. Family households are notably over-represented at 79.2% (versus 66.3% in Regional SA). Conversely, lone person households are under-represented at 19.8% compared to 31.3% in Regional SA. This family-oriented profile influences local demand for family homes, schools, and children's services.
Families in the suburb of Williamstown have an average of 1.8 children, slightly below the Regional SA average of 1.9. This influences local demand for child-related services and larger family homes.
Marriage patterns reveal 54.8% of the adult population are currently married, while 29.6% have never married. This compares to 47.9% married and 31.7% never married across Regional SA.
Single-person households represent 19.8% of all households in the suburb of Williamstown, notably lower than the average for Regional SA of 31.3%. This affects demand for smaller dwellings and single-person accommodation.
Group households (unrelated people sharing) account for 0.9% of households, below the Regional SA average of 2.4%. This lower rate suggests less student or young professional shared accommodation.
Williamstown is considerably less culturally diverse than average when assessed alongside AreaSearch's national rankings for language and cultural background related metrics.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Born overseas | 15.2% | 2021 Census | 29th percentile nationally |
| Speak another language at home | 1.9% | 2021 Census | 3rd percentile nationally |
| English only at home | 98.1% | 2021 Census | 96th percentile nationally |
| Australian citizens | 93.6% | 2021 Census | 97th percentile nationally |
| Born in Australia | 84.8% | 2021 Census | 71st percentile nationally |
| Aboriginal and Torres Strait Islander residents | 0.8% | 2021 Census | 33rd percentile nationally |
Williamstown was found to be below average in terms of cultural diversity, with 84.8% of its population born in Australia, 93.6% being citizens, and 98.1% speaking English only at home.
Christianity is the most commonly reported religion in Williamstown, at 37.9% of people, although more residents (61.3%) reported no religion. Christianity accounts for 45.2% across Regional SA.
In terms of ancestry (country of birth of parents), the top three represented groups in Williamstown are English, comprising 35.3% of the population, Australian, comprising 32.1% of the population, and German, comprising 9.1% of the population. Additionally, there are notable divergences in the representation of certain other ethnic groups: Dutch is notably overrepresented at 1.8% of Williamstown (vs 1.3% across Regional SA), Maltese at 0.4% (vs 0.2%) and Macedonian at 0.1% (vs 0.0%).
15.2% of the suburb of Williamstown population was born overseas, compared to 12.4% across Regional SA.
1.9% of the population in the suburb of Williamstown speaks a language other than English at home, compared to 5.7% in Regional SA.
0.8% of the suburb of Williamstown population identifies as Australian Aboriginal, compared to 3.3% in Regional SA.
93.6% of the suburb of Williamstown population holds citizenship, compared to 89.3% in Regional SA.
04Place
Housing, health, transport, local services and the reports on them.
Williamstown is characterized by a predominantly suburban housing profile, with ownership patterns similar to Regional SA.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Rented homes | 11.3% | 2021 Census | 6th percentile nationally |
| Owned outright | 33.4% | 2021 Census | 50th percentile nationally |
| Detached houses | 99.1% | 2021 Census | 96th percentile nationally |
| Median mortgage repayment | $1,500 a month | 2021 Census, monthly | 28th percentile nationally |
| Owned with a mortgage | 55.4% | 2021 Census | 93rd percentile nationally |
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Semi-detached, terrace and townhouses | 0.9% | 2021 Census | 10th percentile nationally |
| Median weekly rent paid, 2021 Census | $300 | 2021 Census, weekly | 28th percentile nationally |
| Median rent as a share of median household income | 16.8% | 2021 Census, ratio calculated by AreaSearch | 15th percentile nationally |
| Median mortgage repayment as a share of household income | 19.4% | 2021 Census, ratio calculated by AreaSearch | 11th percentile nationally |
| People per bedroom | 0.8 per bedroom | 2021 Census | 72nd percentile nationally |
In the suburb of Williamstown, 33.4% of homes are owned outright, 55.4% are owned with a mortgage, and 11.3% are rented.
According to the latest data, 99.1% of dwellings in the suburb of Williamstown are houses.
In the suburb of Williamstown, 0.0% of dwellings are apartments or units, with an additional 0.9% being semi-detached dwellings.
Outright home ownership in the suburb of Williamstown stands at 33.4%, compared to 41.6% in Regional SA.
The median monthly mortgage repayment in the suburb of Williamstown is $1,500, compared to $1,153 in Regional SA.
The aggregate monthly housing cost in the suburb of Williamstown is $977, which represents the average monthly cost across all housing types.
In the suburb of Williamstown, households with mortgages typically spend 19.4% of their income on mortgage repayments, while renters spend 16.8% of their income on rent.
The average persons per bedroom ratio in the suburb of Williamstown is 0.8, indicating the level of household density.
Housing affordability in the suburb of Williamstown shows mortgage holders spending 19.4% of income on repayments (vs 22.4% in Regional SA), while renters spend 16.8% of income on rent (vs 18.5% in Regional SA).
The dwelling mix in the suburb of Williamstown consists of 99.1% detached houses, 0.9% semi-detached dwellings, 0.0% apartments, and 0.0% other dwelling types.
Housing in Williamstown consumes approximately 12.7% of median household income ($7,716 monthly), indicating costs are highly affordable. The generally accepted benchmark is that housing should not exceed 30% of household income.
Recent development applications in Williamstown show attached dwellings contributing 0% of approvals compared to 1% of existing stock, while detached houses represent 100% of applications versus 99% of current dwellings. This suggests development patterns consistent with existing housing mix. The area shows minimal growth in housing density compared to other Australian locations.
Williamstown's residents are healthier than average in comparison to broader Australia with a fairly standard level of common health conditions seen across both young and old age cohorts.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Private health cover | 53.2% | ATO FY 2024, private health cover | 46th percentile nationally |
| No long-term health condition | 66.3% | 2021 Census | 33rd percentile nationally |
| Need help with daily activities | 4.9% | 2021 Census | 42nd percentile nationally |
| No long-term health condition, under 65 | 72.5% | 2021 Census | 25th percentile nationally |
| Three or more long-term health conditions, under 65 | 1.2% | 2021 Census | 45th percentile nationally |
Around 53.2% of people in the suburb of Williamstown are covered by private health insurance, which compares to 49.2% in Regional SA.
In the suburb of Williamstown, 4.9% of the population is identified as requiring ongoing medical assistance. By comparison, 7.0% of people in Regional SA require similar assistance.
8.9% of people in the suburb of Williamstown are diagnosed with asthma. In comparison, 8.4% of the population across Regional SA is affected by asthma.
Diabetes affects 4.1% of the suburb of Williamstown population, while in Regional SA, 5.8% of people are diagnosed with diabetes.
3.1% of people in the suburb of Williamstown have heart disease. Across Regional SA,4.8% of the population is affected by heart disease.
In the suburb of Williamstown, 53.2% of the population are estimated to have private health insurance. Comparatively, Regional SA sees an estimated private health coverage rate of 49.2%.
Transport servicing is low compared to other areas nationally based on assessment of service frequency, route connectivity and accessibility.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Transport access | 33 out of 100 | AreaSearch transport analysis of timetable data | 33rd percentile nationally |
| Public transport stops | 4 | Public transport timetable (GTFS) data, compiled by AreaSearch | 4th percentile nationally |
| Weekly public transport trips | 40 | Public transport timetable (GTFS) data, compiled by AreaSearch | 6th percentile nationally |
| People per public transport stop | 782 | Public transport timetable (GTFS) data, compiled by AreaSearch | |
| Public transport routes | 7 | Public transport timetable (GTFS) data, compiled by AreaSearch |
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Vehicles per dwelling | 2.0 per dwelling | 2021 Census | |
| Working residents who worked from home | 10.0% | 2021 Census, taken during COVID-19 restrictions |
There are 4 public transport stops within the suburb of Williamstown.
The suburb of Williamstown has 40 weekly trips across 7 routes, averaging 5 trips per day.
On average, residential properties are 971 metres from the nearest transport stop.
From the typical resident, the nearest child care centre is 1.4 km away and the nearest school 1.4 km.
Distance from the typical resident to the nearest of each service. Every bar starts at 0 m. The nearest is orange.
Public transport 4 stops nearby, 40 weekly trips, access rating 33 out of 100.
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Amenity score | 52 out of 100 | AreaSearch proximity analysis | 52nd percentile nationally |
| Nearest child care | 1.4 km | AreaSearch proximity analysis, from the typical resident | |
| Nearest school | 1.4 km | AreaSearch proximity analysis, from the typical resident | |
| Nearest dentist | 1.4 km | AreaSearch proximity analysis, from the typical resident | |
| Nearest pharmacy | 1.4 km | AreaSearch proximity analysis, from the typical resident |
| Measure | Value | Source and date | National percentile |
|---|---|---|---|
| Nearest GP | 1.4 km | AreaSearch proximity analysis, from the typical resident | |
| Nearest supermarket | 8.5 km | AreaSearch proximity analysis, from the typical resident | |
| Nearest shopping centre | 12.4 km | AreaSearch proximity analysis, from the typical resident | |
| Nearest hospital | 14.3 km | AreaSearch proximity analysis, from the typical resident | |
| Nearest fitness centre | 14.3 km | AreaSearch proximity analysis, from the typical resident | |
| Nearest government service | 14.5 km | AreaSearch proximity analysis, from the typical resident | |
| Nearest bank | 14.5 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).
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 Williamstown (SA) 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 Williamstown (SA).
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 Williamstown compared with local real estate markets nationally.
Williamstown has emerging levels of nearby infrastructure activity, ranking in the 30th percentile nationally.
No headline figures are reported for this area.
Median rent in Williamstown (SA) is $460 a week, -3.2% over 12 months to Jun 2026.
Population growth drivers in Williamstown are slightly above average based on AreaSearch's ranking of recent, and medium term trends.
Williamstown's median age exceeds the national pattern.
Income analysis reveals strong economic positioning, with the area outperforming 60% of locations assessed nationally by AreaSearch.
Employment conditions in Williamstown rank among the top 8% of areas assessed nationally.
Williamstown shows below-average educational performance compared to national benchmarks, though pockets of achievement exist.
Williamstown features high concentrations of family households and couples without children but relatively few group households, with a larger average household size than Regional SA.
Williamstown is considerably less culturally diverse than average when assessed alongside AreaSearch's national rankings for language and cultural background related metrics.
Williamstown is characterized by a predominantly suburban housing profile, with ownership patterns similar to Regional SA.
Williamstown's residents are healthier than average in comparison to broader Australia with a fairly standard level of common health conditions seen across both young and old age cohorts.
Transport servicing is low compared to other areas nationally based on assessment of service frequency, route connectivity and accessibility.
Amenity provision was found to be in line with the typical area assessed nationally by AreaSearch, based on counts and proximity analysis.
Williamstown (SA) has an estimated 3,157 residents, up 5.9% since the 2021 Census, with 24 projects tracked in the area around Williamstown (SA).
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 Williamstown (SA).
Data currency
Refreshed . Rents to Jun 2026, population and age estimated to Aug 2026 and taxable income FY 2024. Housing 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 15 Oct 2026 from sources that update on their own cycles; "See the evidence" lists each source and its cycle.
SAL boundaries are defined by Australia Post and the Australian Bureau of Statistics to represent commonly-known suburb names used in postal addresses.
Statistical Areas (SA2) are designed for census data collection and may combine multiple suburbs or 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 (SAL41602). QuickStats reports 2021 only; the figures on this page are more current wherever the ledger shows a later date.
This page uses Suburbs and Localities (SAL) boundaries (suburb-style geography). SAL represents commonly-known suburb names used in addresses, while Statistical Areas (SA2) are designed for census and statistical reporting. Even when sharing the same name, SAL and SA2 boundaries often cover different geographic areas with different populations.
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) and income (FY 2024). Compiled with this profile from sources that publish on their own cycles: development and approvals, property sales and rents, infrastructure projects, employment, households, education, transport, health and services and amenities. Only housing and cultural diversity remain wholly Census-based, because no more current small-area dataset exists for those measures.
Key demographics and figures for Williamstown (SA) 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 Williamstown (SA) 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.
