St Helens Park
A median age of 33, fully 7 years below the national figure, marks St Helens Park as a young family suburb rather than a typical established one, and the housing reflects it. Separate houses make up 89.4% of dwellings and apartments just 0.6%, so the stock is built for households averaging 3.0 people, half a person above national. Three-bedroom homes account for 53.2% and four-plus bedrooms 42.7%, leaving almost nothing smaller. With 49.0% of households carrying a mortgage and the median house price at $870,000, this is a working mortgage-belt pocket of Campbelltown where buying, not renting, drives the market.
Population
6,647
Median Age
33.0
Household IncomeiMedian weekly household income (ABS Census)
$1,850/wk
DAs (12 months)iDevelopment Applications lodged in the past year
23
Median House
$870K
2024-2025 (PSI derived)
The $870,000 median sits well below Sydney's metropolitan figure, and PSI-derived data shows the median climbing 7.6% from $827,005 in 2024 to $890,000 in 2025, a faster one-year move than most outer suburbs. Buyers get space for the money: 89.4% of dwellings are separate houses and 95.9% have three or more bedrooms, with four-plus bedroom homes at 42.7%. Average monthly mortgage repayments of $1,966 produce a mortgage-to-income ratio of just 24.5%, comfortably below the 30% stress threshold, because household incomes sit at the 66.9th percentile while prices stay moderate. That affordability is the suburb's core draw for first and second home buyers priced out of inner Sydney.
For Buyers
The $870,000 median sits well below Sydney's metropolitan figure, and PSI-derived data shows the median climbing 7.6% from $827,005 in 2024 to $890,000 in 2025, a faster one-year move than most outer suburbs. Buyers get space for the money: 89.4% of dwellings are separate houses and 95.9% have three or more bedrooms, with four-plus bedroom homes at 42.7%. Average monthly mortgage repayments of $1,966 produce a mortgage-to-income ratio of just 24.5%, comfortably below the 30% stress threshold, because household incomes sit at the 66.9th percentile while prices stay moderate. That affordability is the suburb's core draw for first and second home buyers priced out of inner Sydney.
For Investors
Renters make up 29.5% of households and weekly rent averages $400, giving a gross yield near 2.4% against the $870,000 median, higher than premium Sydney suburbs where yields fall below 1.5%. The 3.0% vacancy rate points to a balanced rental market with no obvious oversupply, helped by stock that is 89.4% separate houses suited to family tenants rather than transient renters. Development activity is modest at 21 applications in 12 months, several of them secondary dwellings and new structures, so supply growth is gradual. Rent-to-income at 21.6% leaves tenants headroom, supporting rent stability. The investment case rests on steady family demand and the 7.6% annual price move rather than high-density turnover.
Development Activity
Total DAs
92
Last 12 Months
23
YoY ChangeiYear-over-year change in DA lodgements
+76.9%
Avg DA CostiAverage estimated cost per DA in the past year
N/A
Monthly DA Lodgements
DA Categories
Schools in St Helens Park iICSEA: school advantage index. 1000 = national avg, higher = more advantaged
St Helens Park Public School
K-6 · 363 students
Demographics
The median age of 33 runs 7.0 years below the national figure, the clearest signal of a young household base, and average household size of 3.0 sits 0.5 above national, consistent with 2,624 couples with children against just 969 couples without. University qualifications reach 23.5%, which is 6.6 points below national, reflecting a workforce weighted toward trades and service roles rather than degree-heavy professions. Overseas-born residents are 24.3%, 2.7 points above national, and ancestry leans Anglo, led by English (2,017), Irish (480) and Scottish (455). The top non-English languages are Arabic (119), Samoan (58) and Hindi (38), a smaller multicultural mix than Sydney's average.
Age Distribution
Bedrooms
Dwelling Structure
89.4%
Houses
10.0%
Townhouse
0.6%
Apartment
Tenure
Tenure tilts heavily toward buyers: 49.0% of households carry a mortgage, 21.5% own outright and 29.5% rent, a mortgage share far above the national pattern and the hallmark of a young suburb still paying down loans. The stock is overwhelmingly detached at 89.4% separate houses, with apartments at only 0.6% and semi-detached at 10.0%, so density stays low at 1,287 residents per km2. Three-bedroom dwellings dominate at 53.2% and four-plus bedrooms at 42.7%. The median house price rose from $827,005 to $890,000 across 2024-2025, a 7.6% gain. Mortgage-to-income of 24.5% and rent-to-income of 21.6% both sit below stress thresholds, a healthier balance than higher-priced Sydney markets.
Median House Price Trend
Source: State Valuer-General
Mortgage / mo
$1,966
Rent / wk
$400
HH Size
3.0
Personal Income / wk
$794
Vacancy Ratei% of dwellings unoccupied on Census night (ABS 2021)
3.0%
Unoccupied
66
Rent / IncomeiMedian rent as % of household income. Over 30% = housing stress
21.6%
Mortgage / IncomeiMedian mortgage as % of household income. Over 30% = housing stress
24.5%
Community Profile
Languages Spoken at Home
Ancestry
Household Composition
16.6%
Couples, no children
5,827
Total families
Economy & Employment
The local workforce concentrates in service and trade sectors rather than knowledge industries: Healthcare leads at 20.0% (350 workers), Education follows at 11.8% (207) and Construction at 9.4% (164), with Retail at 8.8% and Public Admin at 8.5%. By occupation, Clerical and Admin roles top the list at 474, ahead of Professionals (404) and Community and Personal Service workers (393), a mix that explains why university qualifications run 6.6 points below national. Unemployment sits at 5.9%, above the metropolitan norm, and participation is 52.1%, held down partly by 1,701 residents not in the labour force in a household structure heavy with young children. The full-time employment rate of 67.1% remains solid for an outer suburb.
Socio-Economic Indexes (SEIFA)iABS index ranking suburbs from 1 (most disadvantaged) to 10 (most advantaged)
Full-time
67.1%
Part-time
27.0%
Participation
52.1%
Employed
2,490
Occupations
Top Industries
University
23.5%
Postgraduate
5.2%
Born Overseas
24.3%
Dwellings
2,141
Transport to Work
Car dependence is high: 87.5% of commuters drive, well above the national share, while only 3.1% use public transport and 1.0% walk or cycle, a trade-off of the low-density 1,287 per km2 detached layout. Volunteering runs at 8.5% and 6.7% of residents (426 people) need daily assistance, near typical levels for a young population whose median age of 33 is 7 years below national. Housing pressure is mild, with mortgage-to-income at 24.5% and rent-to-income at 21.6%, both below stress thresholds, so households retain spending capacity. No schools are recorded inside the 5.16 km2 boundary in this dataset, so families rely on schools in neighbouring Campbelltown suburbs, a practical consideration for a household base that is 2,624 couples with children.
Drive
87.5%
Public Transport
3.1%
Walk / Cycle
1.0%
Work from Home
N/A
National Ranking iPercentile rank among ~15,000 AU suburbs. 90% = higher than 90% of suburbs
How St Helens Park compares to ~15,000 Australian suburbs
Frequently Asked Questions
Is St Helens Park a good suburb to live in?
St Helens Park suits young families: the median age of 33 is 7 years below national and average household size of 3.0 is 0.5 above national. Housing is 89.4% separate houses with a moderate $870,000 median, and mortgage-to-income of 24.5% sits below the stress threshold. The main trade-off is car dependence, with 87.5% driving to work.
What is the median house price in St Helens Park?
The median house price is $870,000, well below Sydney's metropolitan figure. PSI-derived data shows it rising 7.6% from $827,005 in 2024 to $890,000 in 2025. Weekly rent averages $400 and monthly mortgage repayments run about $1,966, giving a mortgage-to-income ratio of 24.5%.
What schools are in St Helens Park?
No schools are recorded inside the 5.16 km2 St Helens Park boundary in this dataset, so families rely on schools in neighbouring Campbelltown suburbs. The demand is there, with 2,624 couples with children and an average household size of 3.0, half a person above national.
Is St Helens Park safe?
Detailed crime statistics are not available for St Helens Park in this dataset. As an indirect indicator, residential turnover is low at 17.1%, with 82.9% of residents staying put, and only 6.7% of the 6,647 residents need daily assistance, both patterns consistent with a settled, family-oriented area.
Is St Helens Park good for property investment?
Rent of $400 a week against the $870,000 median gives a gross yield near 2.4%, higher than premium Sydney suburbs below 1.5%. The 3.0% vacancy rate signals a balanced rental market, and rent-to-income of 21.6% supports stability. With 29.5% renting, family-tenant demand underpins the case more than capital growth alone.
How is St Helens Park's population changing?
St Helens Park has a young, growing family base, with a median age of 33 that is 7 years below national and an average household size of 3.0, half a person above national. Turnover is low at 17.1%, and 82.9% of residents stayed put, pointing to settled owner-occupiers rather than rapid resident churn.
How much development is happening in St Helens Park?
There were 21 development applications lodged in the past 12 months, a modest level for a 5.16 km2 suburb. Several are secondary dwellings and new structures lodged as Complying Development Certificates, adding gentle density rather than large-scale new supply, consistent with the 89.4% detached-house character.
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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