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This analysis uses Suburbs and Localities (SAL) boundaries, which can materially differ from Statistical Areas (SA2) even when sharing the same name.
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 comprehensive analysis, consider reviewing both boundary types if available.
est. as @ -- *
2021 Census | -- people
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Trott Park has an estimated 3,185 residents, up from 3,124 at the 2021 Census — a change of 61 people, or 2.0%. That puts 1,062 residents on each square kilometre. Population is estimated from ABS Estimated Resident Population releases and GNAF address data, re-based from the 2021 Census and updated annually.
Detail
Based on study of ABS demographic releases for the wider region, alongside recent address audits conducted by AreaSearch after the Census, the suburb of Trott Park has an estimated population of 3,185 as of May 2026. This represents a growth of 61 people (2.0%) compared to the 3,124 individuals documented in the 2021 Census. The calculation is derived from the current estimated population of 3,185, which AreaSearch calculated using the ABS June 2025 ERP data release combined with 1 validated new address registered since the Census. This population level yields a density of 1,061 persons per square kilometer, a figure that is generally comparable to the averages across places analyzed by AreaSearch.
Growth was heavily influenced by arrivals from abroad, who accounted for approximately 66.0% of the overall population increases in the recent past. Projections developed by the ABS and Geoscience Australia for every SA2 region are utilized by AreaSearch, based on 2022 baseline figures and published in 2024. In instances where SA2 details are unavailable, or for periods past 2032, population forecasts compiled by the SA State Government in 2023 using 2021 data, broken down by age, are implemented alongside a weighting mechanism that aggregates LGA growth patterns up to the SA2 scale. Future projections indicate that expansion will track in the lower quartile compared to national figures, with calculations pointing to an increase of 129 people by 2041, which amounts to a total rise of 4.0% over the 16 years.
Frequently Asked Questions - Population
Detail
Based on analysis of ABS building approvals allocated from wider statistical boundaries, the suburb of Trott Park averages about 3 residential approvals per year, summing to an estimated 15 dwelling permits over the last 5 financial years (from FY-21 to FY-25) and 2 in the current FY-26 period. Average household formation rates stood at 1.5 new residents per finished home annually over the 5 financial years spanning FY-21 to FY-25, suggesting a healthy alignment between construction and demand, though this has accelerated to 3.6 individuals per approved unit during the last 2 financial years, indicating rising demand pressure and potential supply limitations.
New residential projects carry a mean estimated construction cost of $536,000, which highlights focus from developers on higher-end, premium housing. Commercial approvals in the current financial year total $35,000, showing that non-residential building activity remains very minor. In comparison to Greater Adelaide, the suburb of Trott Park records exceptionally low development activity, measuring 87.0% lower than the regional per capita benchmark. This restricted supply of new residential projects generally supports values and demand for existing houses. The level of building is also low relative to national benchmarks, which reflects the mature state of the area and possible planning constraints. In addition, recent construction is composed entirely of single houses, maintaining the suburban profile of the neighborhood and attracting buyers seeking detached houses. The area currently records roughly 1273 residents for every single building approval, pointing to a fully developed property market. Looking forward, the population of the suburb of Trott Park is projected to rise by 129 residents by 2041, according to the latest quarterly calculations from AreaSearch. If building activity continues at its current pace, additions to the housing stock may fall short of demographic growth, which could increase buyer competition and support higher property values.
Frequently Asked Questions - Development
Development applications around Trott Park
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| Lodged | Address | Description | Type | Distance | Status |
|---|
SOURCE: Planning portals and council registers, compiled by AreaSearch. Distance & bearing measured from the suburb midpoint.
AreaSearch tracks 3 current infrastructure and development projects inside Trott Park, worth an estimated $165 million. A further 29 sit in the immediately surrounding suburbs, taking the tracked pipeline within reach of the area to $1.28 billion. 8 are already under construction and 6 are due for completion within three years. The pipeline spans residential development, sports & recreation and education & training. Records are compiled from Infrastructure Australia, state agencies, council planning portals and public announcements, reviewed and updated daily, then ranked by proximity, construction stage, completion horizon and project scale.
Detail
Local infrastructure projects, major works, and development policies are major drivers of regional change. AreaSearch has identified a total of 7 projects that are expected to influence the locality. Key initiatives include the Sheidow Park Primary School Modernisation, the Happy Valley Drive Intersections Planning Study, the Valley Central Shopping Centre Redevelopment, and the Southern Expressway Duplication, with the most relevant ones detailed in the list below.
Professional plan users can use the search below to filter and access additional projects.
INFRASTRUCTURE SEARCH
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Frequently Asked Questions - Infrastructure
Sheidow Park Primary School Modernisation
Major upgrade and modernisation of Sheidow Park Primary School including new modern classrooms and learning areas, a new administration building, and demolition of ageing infrastructure. The SA Government committed an additional $4.3m to the project, bringing total investment to approximately $16.3m. Construction commenced early 2024 under the Malinauskas Labor Government school infrastructure program.
Valley Central Shopping Centre Redevelopment
Comprehensive redevelopment of the former Happy Valley Shopping Centre into Valley Central, a modern community hub featuring Fountain Valley Medical Centre, Happy Valley Dental, REVO Fitness, specialty retail shops, upgraded facades, new entrance tower, roof replacement, undercover promenade seating, and enhanced car parking and landscaping. The 5,000 sqm project was delivered while the shopping centre remained fully operational, with Stage 1 completed in 2024.
Happy Valley Drive Intersections Planning Study
Planning study to develop potential upgrade options for the intersections at Chandlers Hill Road and Windebanks Road on Happy Valley Drive to improve safety and address traffic delays. Community consultation was completed in March-April 2024. The Department for Infrastructure and Transport is coordinating with the City of Onkaparinga. There is currently no funding allocated to deliver the proposed upgrades. Future funding decisions will be considered based on community feedback and further technical investigations. Happy Valley Drive north of Chandlers Hill Road and Chandlers Hill Road are under care and control of DIT, while Happy Valley Drive south of Chandlers Hill Road and Windebanks Road are under care and control of the City of Onkaparinga.
Southern Expressway Duplication
Duplication of Southern Expressway from Bedford Park to Old Noarlunga providing improved access to southern suburbs. Key transport infrastructure reducing congestion and travel times between Adelaide CBD and southern coastal areas.
The Green at Woodcroft
Premium residential development adjacent to Thaxted Park Golf Course by Metro Property Development. Master-planned community offering house and land packages in established area with golf course frontage and parkland access.
Bains Road Reconstruction
Reconstruction of Bains Road between Investigator Drive and Panalatinga Road, Woodcroft. The project includes reconstruction of selected sections of kerbing and guttering, road pavement reconstruction, installation of a new 1.5m wide footpath on the northern side, and installation of new pedestrian refuges to improve road safety and accessibility. Construction commenced in October 2025 with an estimated 8-week completion period, subject to weather conditions.
Hurtle Grove at Old Reynella
Brand new land development at Old Reynella offering opportunity to build new homes. Located in established suburb with heritage character, close to schools, shopping and transport links. Prime location for growing families.
Cove Point Residential Development
Masterplanned coastal residential estate at Hallett Cove by Adelaide Development Company. The project includes premium residential allotments, house and land packages, townhouses and public open space with coastal access. As of 2026 the project remains in the planning phase, with the broader Hallett Cove development area continuing through planning and land division processes.
1,825 residents of Trott Park are employed, from a labour force of 1,872. Unemployment sits at 2.5%, with participation at 71.5%. Weighted for its industry mix, the area's sectors are forecast to grow about 6.6% nationally over five years. That reflects industry composition only and makes no allowance for local population growth. The working-day population is estimated at 2,331, about 73% of the resident population, so more people leave the area for work than travel in. Unemployment and labour force come from ABS Small Area Labour Markets, updated quarterly; the industry and occupation profile is from the 2021 Census.
Detail
The employment landscape in Trott Park is characterized by a highly capable labor pool, with strong representation across vital service industries. According to AreaSearch aggregations of statistical area data, the area experienced an estimated employment growth of 5.6% over the previous year, while maintaining a low unemployment rate of 2.5%. As of March 2026, the local workforce comprised 1,825 individuals actively employed. This unemployment figure stands at 1.3% lower than the Greater Adelaide average of 3.8%. Workforce participation rates in Trott Park are relatively typical, reaching 71.5% as opposed to the 66.6% recorded in Greater Adelaide.
Census data indicates that only 8.9% of residents engage in remote work, a figure that likely reflects the lingering effects of Covid-19 lockdown measures. Jobs held by residents are primarily found in healthcare & social assistance, construction, and retail trade. There is a particularly high concentration in construction, where local employment is 1.4 times the average for the region. On the other hand, professional & technical roles are underrepresented, accounting for 5.1% of jobs compared to the regional benchmark of 7.3%. Given the difference between the local working population and the count of resident workers, this residential suburb appears to offer few employment options within its own borders. Based on SALM and ABS figures aggregated across broader statistical territories, employment rose by 5.6% and the labor force grew by 5.0% during the 12 months leading to March 2026, causing a decline in the unemployment rate of 0.6 percentage points. For comparison, Greater Adelaide recorded a 4.2% rise in employment, a 4.0% expansion in the labor force, and a 0.2 percentage point decrease in the unemployment rate. Future demand in the suburb of Trott Park can be explored through Jobs and Skills Australia's national employment projections released in May-25. These five-year and ten-year projections have been applied to the local workforce structure to model growth scenarios. Nationally, employment is predicted to grow by 6.6% over five years and 13.7% over ten years, with wide variation between sectors. Mapping these trends to the local industry mix suggests employment among residents could grow by 6.6% over five years and 13.8% over ten years, representing a basic weighted projection for modeling purposes that does not incorporate local population forecasts.
Frequently Asked Questions - Employment
Median household income in Trott Park is $1,752 a week (about $91,000 a year), with median personal income at $766 a week. ATO records put median taxable income at $48,470 a year against an average of $54,732. Household income is from the 2021 Census; taxable income is from ATO Taxation Statistics for the latest financial year available, indexed forward using the ABS Wage Price Index.
Detail
According to the latest postcode-level tax data from the ATO for financial year 2023, the suburb of Trott Park recorded a median taxpayer income of $48,470 and an average income of $54,732. These amounts are below national benchmarks and compare to median and average figures of $54,808 and $66,852 for Greater Adelaide. Accounting for Wage Price Index inflation of 10.17% since financial year 2023, estimated incomes would be roughly $53,399 for the median and $60,298 for the average as of March 2026. Data from the 2021 Census shows that personal, family, and household incomes are moderate, placing between the 42nd and 50th percentiles.
The income distribution shows that 40.3% of the local population (1,283 people) earn between $1,500 and $2,999, which is higher than the 31.8% recorded across the broader region. After paying for housing, households retain 86.6% of their income for other living costs, and the area is situated in the 5th decile of the SEIFA income index.
Frequently Asked Questions - Income
Trott Park had 1,117 occupied dwellings at the 2021 Census, 98% detached houses and 0% apartments. 54% are owned with a mortgage, 13% rented and 33% owned outright. At that Census the median rent was $350 a week and the median mortgage repayment $1,517 a month. Rent absorbs 20.0% of household income here and mortgage repayments 20.0%. Dwelling stock, tenure and housing costs are 2021 Census measures — the only source that counts dwellings at this boundary size.
Detail
Residential buildings in the suburb of Trott Park at the time of the latest Census consisted of 97.5% stand-alone houses and 2.5% other housing types like apartments or semi-detached units, compared to 75.2% houses and 24.9% other dwellings across metro Adelaide. The proportion of outright home owners was 32.8%, matching the metropolitan average, while the remaining homes were occupied by mortgagors (54.2%) or tenants (13.0%). The median mortgage payment in the area was lower than the Adelaide metropolitan average at $1,517 per month, while the median rent was $350 per week, compared to metropolitan averages of $1,562 and $320.
On a national level, housing costs are lower, with median mortgages under the Australian average of $1,863 and rents below the national figure of $375.
Frequently Asked Questions - Housing
Trott Park counted 1,117 households at the 2021 Census, averaging 2.6 people each. 40% are couples with children, more than in 78% of areas nationally, against 28% couples without children. 19% of households are people living alone, and families average 1.6 children. Household and family composition is measured only by the Census, so these are 2021 figures.
Detail
Families make up 78.7% of all households, consisting of couples with children (39.5%), couples without children (27.5%), and single parent families (11.7%). The remaining 21.3% are non-family households, which are mostly individuals living alone (19.0%) and group households (1.9%). The median household size stands at 2.6 residents, which is slightly larger than the Greater Adelaide average of 2.5.
Frequently Asked Questions - Households
21.2% of adults in Trott Park hold a university qualification, including 15.6% with a bachelor degree and 3.3% with postgraduate qualifications, higher than 82% of areas nationally. A further 27.4% hold a vocational qualification. Qualifications come from the 2021 Census.
Detail
Academic credentials in the suburb of Trott Park are lower than the regional average, as 21.2% of residents aged 15 and over hold a university degree compared to 30.7% in the surrounding SA3 region. This difference points to opportunities for training and tertiary education expansion. Bachelor degrees are the most common qualification at 15.6%, followed by postgraduate degrees at 3.3% and graduate diplomas at 2.3%. Vocational and technical skills are common, with 38.6% of residents aged 15 and over holding vocational qualifications, comprising 11.2% with advanced diplomas and 27.4% with certificates.
Enrolment rates are high, with 25.8% of the population currently engaged in study. This includes 10.6% of residents in primary schools, 5.0% in secondary schools, and 4.8% enrolled in tertiary institutions.
Frequently Asked Questions - Education
Schools Detail
Public transport in Trott Park reaches 16 stops on 11 routes, timetabled for about 850 services a week. The typical home sits about 220 m from its nearest stop. Buses carry the largest share of public transport commuters. Households keep an average of 1.7 vehicles. Stop and service counts are built from operators' published GTFS timetables and refresh with each timetable release; vehicle ownership is from the 2021 Census.
Detail
Public transit audits show 16 active stops located in the suburb of Trott Park, which are serviced by a variety of buses. These stops accommodate 11 separate transit routes, providing a total of 849 passenger journeys each week. Transit access is good, with residents living an average of 224 meters from the nearest stop. Because the area is mostly residential, the majority of working residents travel outside the suburb, with private vehicles remaining the primary mode of travel at 92%. Household vehicle ownership stands at 1.7, which exceeds the regional average.
A low 8.9% of residents worked from home, according to the 2021 Census, which may have been influenced by COVID-19 rules. Transit services average 121 runs per day across all active routes, which represents approximately 53 weekly trips for each individual stop.
Frequently Asked Questions - Transport
Transport Stops Detail
65.2% of residents in Trott Park report no long-term health condition. 7.8% need daily assistance with core activities, and 48.7% hold private health cover. The standardised death rate runs at 5.9 per 1,000 residents. Health conditions, assistance needs and insurance are 2021 Census measures; the death rate comes from current ABS releases.
Detail
The suburb of Trott Park has notable health demands, according to AreaSearch analysis of mortality statistics and chronic disease data, with illnesses present across all demographics but particularly prevalent among older age groups. In addition, the proportion of residents with private health insurance is low at approximately 49% of the population, representing roughly 1,550 people. This compares to 52.7% across Greater Adelaide and a national benchmark of 55.7%. Asthma and mental health issues are the most frequent medical diagnoses, affecting 8.9% and 8.1% of residents. Meanwhile, 65.2% of the population reported having no chronic medical conditions, compared to 67.9% across Greater Adelaide.
Health indicators for working-age residents are typical. Residents aged 65 and older make up 20.1% of the population (640 people). The health profile of these seniors presents some challenges, though it ranks more favorably on a national scale than the general local population.
Frequently Asked Questions - Health
Trott Park is largely Australian-born, at 78.0% of residents, with 10.7% speaking a language other than English at home. The largest reported ancestries are English (32.8%) and Australian (26.8%). Ancestry, language and country of birth are counted only by the Census, so these are 2021 figures.
Detail
The suburb of Trott Park exhibits above-average cultural diversity, with 10.7% of residents using a non-English language at home and 22.0% born outside of Australia. Christianity is the primary religion, followed by 37.9% of the population. The most prominent disproportionate representation is seen in Hinduism, which is practiced by 2.2% of the population, compared to 2.8% across Greater Adelaide. Looking at ancestral background, the most common heritages are English (32.8%), Australian (26.8%), and Scottish (7.8%). There are also specific deviations in other ancestries, with Welsh ancestry overrepresented at 0.9% of the population compared to 0.6% across the region, Polish at 1.2% compared to 1.0%, and Dutch at 1.7% compared to 1.2%.
Frequently Asked Questions - Diversity
The median resident of Trott Park is 39. 23.9% of residents are aged 15 to 34. Age cohorts are not raw Census counts: the Census split is re-based to the latest ABS population estimates and state projections.
Detail
The median age in the suburb of Trott Park is 39 years, matching the Greater Adelaide median of 39 and similar to the national median of 38. Relative to Greater Adelaide, the 65 - 74 age group is overrepresented, making up 12.3% of the community, while the 15 - 24 age bracket is underrepresented at 10.9%. Since the 2021 Census, the proportion of residents aged 65 to 74 grew from 11.1% to 12.3%, whereas the 25 to 34 age group dropped from 13.9% to 13.0%. Long-term models suggest the age distribution will shift significantly by 2041.
The 75 to 84 bracket is set to grow fastest at 56%, adding 92 residents to reach 258. Demographic aging is evident, with seniors aged 65 and over accounting for 78% of the forecast growth. In contrast, population drops are expected for both the 55 to 64 and 5 to 14 age groups.
Frequently Asked Questions - Age
Data & MethodBoundaries, Sources & Method for Trott Park
9 of 14 data sections on this page were updated within the last 12 months — the newest current to Aug 2026.
Everything is aggregated to the Suburb (SAL) boundary shown above, on a 2021 Census baseline. Only 3 sections — housing, households and cultural diversity — still wait on the 2026 Census.
The ledger — source, cycle and currency by section
| Section | Source & update cycle | Currency |
|---|---|---|
| Updated within the last 12 months 9 sections | ||
| Population | ABS, GNAF, Geoscience Australia Annual (ABS ERP) | May 2026 3 months ago headline measures · 2021 Census baseline |
| Re-based to the ABS Estimated Resident Population (June 2025 release) and updated with new dwellings from GNAF address data. Current to May 2026, with the 2021 Census supplying the small-area baseline. | ||
| Age profile | ABS, Geoscience Australia, State governments Annual | May 2026 3 months ago headline measures · 2021 Census baseline |
| Age cohorts are re-based to the latest ABS population estimates and state projections, current to May 2026. Each cohort is held as a Census baseline and a current estimate. | ||
| Development & approvals | ABS, GNAF Monthly (ABS approvals) | Jun 2026 2 months ago headline measures · May 2026 baseline |
| Property sales & rents | Valuer General, Rental Board, ABS Weekly sales, quarterly rents | Aug 2026 this month all 21 measures |
| Sales from the state Valuer General register, refreshed weekly, and rents from quarterly rental bond lodgements. Both are read live each time this page loads, current to Aug 2026. | ||
| Infrastructure projects | Infrastructure Australia, State agencies, Local governments Daily | Nov 2025 9 months ago all 3 projects tracked here |
| Project pipeline maintained continuously from Infrastructure Australia, state agencies, local government and public announcements. Records are added and revised daily; this area was last updated Nov 2025. | ||
| Employment | ABS, DEWR, JSA Quarterly (ABS SALM) | Mar 2026 5 months ago headline measures · 2021 Census baseline |
| Unemployment and labour force from ABS Small Area Labour Markets, current to Mar 2026. The growth outlook applies Department of Employment (now Jobs and Skills Australia) forecasts for all 19 industry divisions to the local industry mix, so it measures sector composition rather than local expansion and makes no allowance for population growth. Job demand comes from the same agency via its Internet Vacancy Index; industry and occupation structure from the 2021 Census. | ||
| Education | ABS, ACARA Annual (ACARA) | Aug 2026 this month headline measures · 2021 Census baseline |
| Transport | ABS, State Transport Departments Each timetable release | Jul 2026 last month headline measures · 2021 Census baseline |
| Services & amenities | Provider directories, ACECQA Continuous | Jul 2026 last month all 14 measures |
| Annual and financial-year sources 2 sections | ||
| Income | ABS, ATO Annual (ATO) | FY 2023 3 years ago headline measures · 2021 Census baseline |
| ATO taxable income statistics for FY 2023, indexed forward using the Wage Price Index. Census household income provides the distribution detail. | ||
| Health | ABS, ATO Annual | 2024 2 years ago headline measures · 2021 Census baseline |
| Census-measured — next update: 2026 Census 3 sections No more current small-area source exists for these, so they are labelled as Census-measured rather than implied to be current. | ||
| Housing | ABS 5-yearly (Census) | 2021 Census next update 2026 all 30 measures |
| Households | ABS 5-yearly (Census) | 2021 Census next update 2026 all 18 measures |
| Cultural diversity | ABS, Geoscience Australia 5-yearly (Census) | 2021 Census next update 2026 all 44 measures |
"Currency" is the most recent release feeding that section. Where the Census supplies the structural baseline underneath a current headline figure, the row says so.
How the numbers are built
Population
The Census provides the small-area baseline, aggregated from mesh blocks to this boundary. It is then re-based to the ABS Estimated Resident Population (June 2025 release), and new dwellings built since Census night are counted from address data — 1 validated new addresses here. The headline figure is therefore a current estimate for May 2026, not a 2021 count (3,124 at the 2021 Census → 3,185 now). Annual growth rates are compound (CAGR), not simple averages.
Age profile
Cohort shares are not raw Census counts. Every cohort is held as a pair — the Census baseline and a current estimate — and the split is re-based using ERP and state population projections, current to May 2026. Median age is the Census median plus modelled change since. Charts that show both are labelled "2021 Census vs Current Estimate".
Property sales
Sourced from the state valuation authority's sales register — current, not Census, and refreshed weekly. Medians are calculated from settled transactions in the period shown; periods with very low transaction counts are flagged or suppressed, because a handful of sales can move a median substantially.
Rents
Derived from state rental bond lodgement data, by dwelling type and bedroom count. Bonds are lodged at the start of a new tenancy, so this reflects new lettings, not the whole rented stock.
Development & infrastructure
Building approvals come from current ABS releases; development applications are collected from council and state planning portals; the infrastructure pipeline is compiled from Infrastructure Australia and local government sources. Applications are matched to this boundary by address or coordinates, so very recent lodgements may not yet appear.
Employment & income
Industry and occupation structure comes from the Census, but the headline labour-market indicators do not. Unemployment and labour force are derived from ABS Small Area Labour Markets (quarterly). The employment outlook applies Department of Employment forecasts for all 19 industry divisions to this area's own industry mix (the agency is now Jobs and Skills Australia), as does the Internet Vacancy Index used for job demand. Because it is weighted on industry composition alone, that outlook carries no allowance for local population growth — in fast-growing areas the real rise in local jobs will typically be higher. Income combines Census household income with ATO taxable-income statistics for FY 2023, indexed forward using the Wage Price Index.
Education, transport & amenities
School enrolments, ICSEA and performance come from ACARA's current release, not the Census. Public transport stops and service frequency are derived from GTFS timetable feeds published by state transport departments. Services and amenities are proximity and count scores built from provider directories, refreshed on their own cycle. The Census contributes only the travel-to-work and qualification measures.
Rankings and benchmarks. Where we rank this area, the comparison set is every area of the same boundary type — suburbs against suburbs, SA2s against SA2s. Benchmarks compare this area against its greater capital city region and the national figure for the same measure and period.
Limits worth knowing. Small areas carry larger error margins, and the ABS introduces small random adjustments to Census counts to protect confidentiality — so totals may not sum exactly. Estimates re-based from regional data describe the area's expected trajectory, not a direct count of it. Figures are indicative for research and are not financial, planning or valuation advice.
Cross-check us. The Census baseline for this boundary is at ABS 2021 Census QuickStats (SAL41473). QuickStats reports 2021 only — the figures on this page are more current wherever the ledger shows a later date.