Strathalbyn
At a median age of 47, Strathalbyn runs 7 years above the national median, and that older profile shapes almost everything about the suburb. Separate houses make up 94.1% of dwellings across a sprawling 117.25 km2 footprint, giving a density of just 61.8 people per km2, far below any metropolitan rate. The town sits in IRSAD decile 4 with household income at the 27.9th percentile, so it reads as a modest, settled regional centre rather than an affluent one. Yet population grew 22.0% over the past decade and is forecast to climb to 9,572 by 2031, driven almost entirely by internal migration of 152 people a year. Crime at 24.4 per 1,000 residents is low, reinforcing its appeal to families and retirees leaving Adelaide.
Population
7,246
Median Age
47.0
Household IncomeiMedian weekly household income (ABS Census)
$1,254/wk
DAs (12 months)iDevelopment Applications lodged in the past year
196
Strathalbyn is built for buyers who want space. Separate houses account for 94.1% of the stock, three-bedroom homes make up 50.7% and four-plus-bedroom homes another 37.2%, so almost 88% of dwellings have three or more bedrooms. Median monthly mortgage repayments sit at $1,500, well below capital-city levels, and the mortgage-to-income ratio of 27.6% stays under the 30% stress threshold despite household income sitting in only the 27.9th percentile nationally. Ownership is the norm here: 40.1% own outright and 39.2% carry a mortgage, leaving just 20.7% renting. The 2.4-person average household size, a touch below the national figure, fits the older couple base, with couples without children (34.4%) close behind couples with children. For owner-occupiers prioritising land and detached living over apartment amenity, the value equation is straightforward.
For Buyers
Strathalbyn is built for buyers who want space. Separate houses account for 94.1% of the stock, three-bedroom homes make up 50.7% and four-plus-bedroom homes another 37.2%, so almost 88% of dwellings have three or more bedrooms. Median monthly mortgage repayments sit at $1,500, well below capital-city levels, and the mortgage-to-income ratio of 27.6% stays under the 30% stress threshold despite household income sitting in only the 27.9th percentile nationally. Ownership is the norm here: 40.1% own outright and 39.2% carry a mortgage, leaving just 20.7% renting. The 2.4-person average household size, a touch below the national figure, fits the older couple base, with couples without children (34.4%) close behind couples with children. For owner-occupiers prioritising land and detached living over apartment amenity, the value equation is straightforward.
For Investors
Strathalbyn is a thin rental market, which cuts both ways for investors. Only 20.7% of residents rent, the smallest tenure group, against 40.1% who own outright, so the tenant pool is shallow. Weekly rent of $300 is affordable but modest, and the 6.1% vacancy rate is higher than a tight market would show, signalling limited rental pressure. Rent has grown 20.0% over the period, and rent-to-income at 23.9% leaves headroom below stress. The strongest investment signal is supply-side momentum: 180 development applications in the past 12 months, including a 20-allotment land division, point to active subdivision and new-build demand. With internal migration adding 152 people a year and population up 22.0% over the decade, the thesis here is land banking and house-and-land in a growing regional centre rather than yield from existing rentals.
Development Activity
Total DAs
1,190
Last 12 Months
196
YoY ChangeiYear-over-year change in DA lodgements
-2.0%
Avg DA CostiAverage estimated cost per DA in the past year
N/A
Monthly DA Lodgements
DA Categories
Schools in Strathalbyn iICSEA: school advantage index. 1000 = national avg, higher = more advantaged
Tyndale Christian School Strathalbyn
R-12 · 317 students
Eastern Fleurieu R-12 School
U, R-12 · 1332 students
Demographics
Strathalbyn skews older and more Anglo than the nation. The median age of 47 is 7 years above the national median, and the senior share has climbed 7.1 points while the working-age share fell 3.6 points, a clear aging trajectory. Just 12.9% were born overseas, 8.7 points below the national average, and English ancestry dominates at 3,617 residents, followed by Scottish (880), German (762) and Irish (624), reflecting the town's German and British settler roots. University qualification at 20.7% sits 9.4 points below national, consistent with a trades and services workforce rather than a knowledge economy. Households average 2.4 people, just under the national figure, and couples without children (34.4%) nearly match couples with children. Volunteering at 24.7% is high, a marker of an established, community-oriented town.
Age Distribution
Bedrooms
Dwelling Structure
94.1%
Houses
5.4%
Townhouse
N/A
Apartment
Tenure
Strathalbyn's housing market is overwhelmingly owner-occupied and detached. Outright owners (40.1%) and mortgage holders (39.2%) together make up 79.3% of households, with renters at just 20.7%, a tenure profile far more settled than metropolitan averages. Separate houses are 94.1% of dwellings and semi-detached only 5.4%, with no measurable apartment stock, so the town offers almost no high-density alternative. Three-bedroom homes lead at 50.7%, four-plus-bedroom homes at 37.2%, and small dwellings of one bedroom or fewer are a negligible 1.5%. Median mortgage repayments of $1,500 a month and weekly rent of $300 keep costs low in absolute terms. The IER decile of 6 sits above the IEO decile of 3, showing residents hold reasonable economic resources even though formal education and occupation scores are lower, a pattern typical of asset-rich regional homeowners.
Mortgage / mo
$1,500
Rent / wk
$300
HH Size
2.4
Personal Income / wk
$641
Vacancy Ratei% of dwellings unoccupied on Census night (ABS 2021)
6.1%
Unoccupied
186
Rent / IncomeiMedian rent as % of household income. Over 30% = housing stress
23.9%
Mortgage / IncomeiMedian mortgage as % of household income. Over 30% = housing stress
27.6%
Community Profile
Ancestry
Household Composition
34.4%
Couples, no children
5,708
Total families
Economy & Employment
Strathalbyn's economy leans on care and trades rather than professional services. Healthcare leads employment at 21.3% (421 workers), well above the national share, followed by Education at 10.2% (202), Construction at 9.2% (182), Retail at 8.1% (160) and Manufacturing at 6.9% (137). Occupationally, Professionals (466) narrowly top the list ahead of Community and Personal Service workers (432) and Labourers (404), a flatter distribution than the manager-heavy mix of wealthy suburbs. Unemployment is low at 4.4%, but the participation rate of 50.6% is well below national, dragged down by the older population, with 2,496 people not in the labour force. Full-time employment at 56.8% is moderate. The SEIFA picture is mixed: IEO decile 3 (education and occupation) is weak, while IER decile 6 (economic resources) is stronger, the divergence explained by high outright home ownership offsetting modest incomes.
Unemployment
2.6%
Labour Force
4,171
Unemployed
108
Quarterly Trend
Source: SALM Dec-25
Socio-Economic Indexes (SEIFA)iABS index ranking suburbs from 1 (most disadvantaged) to 10 (most advantaged)
Full-time
56.8%
Part-time
38.8%
Participation
50.6%
Employed
2,895
Occupations
Top Industries
University
20.7%
Postgraduate
3.3%
Born Overseas
12.9%
Dwellings
2,818
Transport to Work
Strathalbyn trades urban convenience for safety and space. Crime at 24.4 per 1,000 residents, 177 offences in total, is low and a genuine draw for families and retirees, consistent with its low-crime identity. The flip side is car dependence: 90.3% drive to work while public transport carries just 1.3% and active travel 3.4%, unavoidable given the 117.25 km2 spread and density of only 61.8 people per km2. SEIFA places the town in IRSAD decile 4 and IRSD decile 5, mid-to-lower nationally, but economic resources sit higher at IER decile 6 because home ownership is so widespread. Volunteering at 24.7% points to an engaged local community. The trade-off is clear: residents accept long drives and limited transit in exchange for a quiet, low-crime, house-and-garden lifestyle.
Drive
90.3%
Public Transport
1.3%
Walk / Cycle
3.4%
Work from Home
N/A
Population Forecast
+1.78%/yr
(+154 people/yr)
EstablishedStrathalbyn is growing steadily and gentrifying faster than its older demographic suggests. The ERP rose from 8,345 in 2023 to 8,670 in 2025, with the medium forecast projecting 9,572 by 2031, an annual rate of 1.78% or 154 people a year. Population is up 22.0% over the decade, and a gentrification score of 45 now flags an active stage, supported by net internal migration of 152 a year and acceleration from 11% to 19% on the underlying metric. Internal migration is the dominant driver, dwarfing overseas migration of just 28 a year, so growth is Adelaide-driven relocation rather than international arrivals. Affordability improved slightly, from 48.9% in 2011 to 46.3% in 2021. The aging trajectory persists, with the senior share up 7.1 points, meaning new arrivals are reinforcing rather than reversing the older profile.
Historical + Forecast
Hamilton-Perry + Holt smoothing on ERP 2001-2025
Age Cohort Forecast
Primary Driver
Internal Migration
Net Overseas / yr
+28
Net Internal / yr
+152
Gentrification Signal
Active
Population +32% since 2011, Net internal migration +152/yr, Accelerating: 11% → 19%
Safety & Crime
Total Offences
177
Year ending June 2024
Rate per 1,000 People
24.4
Source: Crime Statistics Agency Victoria / SA Police
National Ranking iPercentile rank among ~15,000 AU suburbs. 90% = higher than 90% of suburbs
How Strathalbyn compares to ~15,000 Australian suburbs
Frequently Asked Questions
Is Strathalbyn a good suburb to live in?
Strathalbyn suits families and retirees who want space and safety. Crime is low at 24.4 per 1,000 residents, 94.1% of homes are detached houses, and 40.1% of residents own outright. The trade-offs are car dependence (90.3% drive) and a median age of 47, 7 years above national, so it favours settled households over young professionals.
What is the median house price in Strathalbyn?
A reliable median sale price was not available in the data, but housing costs are modest: median mortgage repayments are $1,500 a month and the mortgage-to-income ratio is 27.6%, below the 30% stress threshold. With 94.1% detached houses and household income at the 27.9th percentile, the market is affordable relative to capital cities.
What schools are in Strathalbyn?
No individual school records were available in this dataset to verify by name. Education is a significant local employer at 10.2% of jobs (202 workers), the second-largest industry, reflecting school provision in the town serving its population of 7,246. Prospective families should confirm current enrolments directly with providers.
Is Strathalbyn safe?
Yes, Strathalbyn is a low-crime town. The crime rate is 24.4 per 1,000 residents, with 177 total offences recorded, well below the rates seen in dense metropolitan suburbs. Low density of 61.8 people per km2 and a settled, owner-occupied population (79.3% own outright or with a mortgage) contribute to the safety profile.
Is Strathalbyn good for property investment?
It is better for land banking than rental yield. Only 20.7% of residents rent, the vacancy rate is 6.1%, and weekly rent is a modest $300. The stronger signal is supply: 180 development applications in 12 months and population up 22.0% over the decade, driven by internal migration of 152 people a year, point to growth in a regional centre.
How is Strathalbyn's population changing?
The population is growing and aging at the same time. It rose 22.0% over the decade to 8,670 in 2025 and is forecast to reach 9,572 by 2031, at 1.78% a year. Growth is driven by internal migration of 152 people annually, far above overseas migration of 28, while the senior share has risen 7.1 points.
How to read these comparisons
Phrases like "above the national average" reference the unweighted median across Australian suburbs with more than 1,000 residents, not population-weighted national figures. Suburb-level medians are more useful for ranking suburbs against each other; ABS census headlines are population-weighted (so dominated by Sydney and Melbourne) and can read very differently.
Current baseline (refreshed 2026-05-10): median age 40, university-educated 30.1%, born overseas 21.6%, average household size 2.5 people.
Data sources: ABS 2021 Census (demographics, income, tenure), state Valuer-General (house prices), Department of Jobs SALM (unemployment), ACARA (school ICSEA), state Crime Statistics agencies (offences), council DA portals (development applications). Population forecasts use a Hamilton-Perry cohort model calibrated to ABS ERP.
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