Glen Alpine
Household income in the 94.5th percentile nationally, yet SEIFA deciles of 2-4 point to structural disadvantage sitting just below the surface. Glen Alpine's contradiction is explained by its stock: 98.5% detached houses, 93% with 4 or more bedrooms, and only 8.1% renters. Families own here, usually with a mortgage (50.3%), at a $1,320,000 median. The suburb is aging, with a median age of 43, which is 3 years above national, and the senior share rose 8.6 points over the decade. Population growth of 0.35% annually is slow by NSW standards, driven mainly by overseas arrivals rather than natural increase.
Population
4,429
Median Age
43.0
Household IncomeiMedian weekly household income (ABS Census)
$2,669/wk
DAs (12 months)iDevelopment Applications lodged in the past year
23
Median House
$1.3M
2024-2025 (PSI derived)
The median house price is $1,320,000 as of 2025, up from $1,311,500 in 2024, a 1.4% annual gain that tracks well below Sydney's headline growth. The mortgage-to-income ratio sits at 18.8%, below the 30% stress threshold, which means buyers at current prices are not stretched by local income standards. The stock is almost entirely detached houses (98.5%), with 93% having 4 or more bedrooms, so buyers are not trading size for price. Monthly repayments average $2,167. Outright ownership at 41.6% is high compared to the national mortgage-belt average, suggesting a cohort of established, paid-down owners that limits stock turnover. Development activity recorded 23 applications in the past 12 months, mostly single dwellings and modifications.
For Buyers
The median house price is $1,320,000 as of 2025, up from $1,311,500 in 2024, a 1.4% annual gain that tracks well below Sydney's headline growth. The mortgage-to-income ratio sits at 18.8%, below the 30% stress threshold, which means buyers at current prices are not stretched by local income standards. The stock is almost entirely detached houses (98.5%), with 93% having 4 or more bedrooms, so buyers are not trading size for price. Monthly repayments average $2,167. Outright ownership at 41.6% is high compared to the national mortgage-belt average, suggesting a cohort of established, paid-down owners that limits stock turnover. Development activity recorded 23 applications in the past 12 months, mostly single dwellings and modifications.
For Investors
The investment case is constrained by thin rental demand. Only 8.1% of dwellings are rented, below the national average, and weekly rent of $570 against a $1,320,000 median implies a gross yield around 2.2%. The 2.6% vacancy rate is low, pointing to stable occupancy for existing investors, but the small rental pool limits capital growth from rental demand expansion. Net overseas migration adds 164 residents a year, the primary driver of demand above internal net inflow of 75. Rent grew 37.0% over the measured period, faster than the 1.4% real income growth, which narrows affordability for renters over time. Development activity is modest at 23 applications in 12 months, mostly house-scale projects rather than new land supply.
Development Activity
Total DAs
118
Last 12 Months
23
YoY ChangeiYear-over-year change in DA lodgements
+4.5%
Avg DA CostiAverage estimated cost per DA in the past year
N/A
Monthly DA Lodgements
DA Categories
Demographics
The median age of 43 is 3 years above the national figure, and the aging trajectory is clear: the senior share rose 8.6 points while the working-age share fell 3.3 points over the decade. Overseas-born residents make up 28.3%, which is 6.7 percentage points above the national average. English (1,354), Irish (387) and Scottish (346) ancestries dominate, with Italian (219) also prominent. The top non-English languages are Arabic (89 speakers), Mandarin (22) and Persian (20), reflecting modest Middle Eastern and Asian community presence. University qualifications reach 36.0%, which is 5.9 points above national. Average household size is 3.2 people, 0.7 above national, consistent with the dominant couples-with-children profile (1,448 families) and large 4-plus bedroom stock.
Age Distribution
Bedrooms
Dwelling Structure
98.5%
Houses
0.6%
Townhouse
0.9%
Apartment
Tenure
Glen Alpine is one of the most detached-house-concentrated suburbs in NSW, with 98.5% separate houses and just 0.9% apartments. Of those houses, 93% have 4 or more bedrooms, making it an outlier nationally where large-family homes dominate. The tenure split shows 41.6% own outright and 50.3% carry a mortgage, with renters at just 8.1%, well below state averages. The median house price rose from $1,311,500 in 2024 to $1,330,000 in 2025, a 1.4% CAGR over the available period. Mortgage-to-income at 18.8% and rent-to-income at 21.4% both sit comfortably below stress thresholds, indicating that current residents are not financially stretched relative to local incomes.
Median House Price Trend
Source: State Valuer-General
Mortgage / mo
$2,167
Rent / wk
$570
HH Size
3.2
Personal Income / wk
$883
Vacancy Ratei% of dwellings unoccupied on Census night (ABS 2021)
2.6%
Unoccupied
35
Rent / IncomeiMedian rent as % of household income. Over 30% = housing stress
21.4%
Mortgage / IncomeiMedian mortgage as % of household income. Over 30% = housing stress
18.8%
Community Profile
Languages Spoken at Home
Ancestry
Household Composition
24.1%
Couples, no children
4,092
Total families
Economy & Employment
Healthcare is the largest employing industry at 17.0% (250 workers), followed by Education at 14.7% (216) and Construction at 10.3% (151). Professional/Tech services account for 8.4% (124) and Public Administration 6.9% (102). By occupation, Professionals (509) and Managers (375) are the two largest groups, ahead of Clerical/Admin (354), consistent with a white-collar commuter workforce. The full-time employment rate is 66.2% and unemployment is low at 4.1%, though the participation rate of 53.6% reflects the older age structure with 1,311 residents not in the labour force. SEIFA tells a nuanced story: personal weekly income of $883 and household income in the 94.5th percentile nationally, yet the IRSD decile is 2 and IRSAD decile 3, suggesting pockets of disadvantage that high median incomes mask at the aggregate level.
Unemployment
6.2%
Labour Force
11,736
Unemployed
722
Quarterly Trend
Source: SALM Dec-25
Socio-Economic Indexes (SEIFA)iABS index ranking suburbs from 1 (most disadvantaged) to 10 (most advantaged)
Full-time
66.2%
Part-time
29.7%
Participation
53.6%
Employed
1,902
Occupations
Top Industries
University
36.0%
Postgraduate
9.9%
Born Overseas
28.3%
Dwellings
1,337
Transport to Work
Car dependence is almost universal: 90.2% of residents drive to work and only 1.6% use public transport, below even typical outer-suburban rates, reflecting the suburb's location without strong rail connectivity. Schools are not recorded in the dataset within the Glen Alpine boundary, so families rely on institutions in nearby Campbelltown or Minto areas. Crime statistics are not available in this dataset. The IRSD decile of 2 flags relative disadvantage nationally despite the high income figures, suggesting uneven access to services within the local area. Volunteering runs at a healthy 12.4%, and only 5.7% of residents (245 people) need daily assistance. Rent-to-income at 21.4% and mortgage-to-income at 18.8% both sit below the 30% stress threshold, indicating financial comfort for most households.
Drive
90.2%
Public Transport
1.6%
Walk / Cycle
1.2%
Work from Home
N/A
Population Forecast
+0.35%/yr
(+79 people/yr)
EstablishedPopulation growth is 0.35% annually, adding roughly 79 persons a year, and the 10-year change is 4.9%, slow relative to NSW metro averages. Overseas migration is the primary driver, averaging 164 net arrivals per year, while internal migration contributes a further 75 net. Medium forecasts project the broader area population rising from 22,132 to 22,525 by 2031, a modest 1.8% increase over six years. The gentrification score of 9 and stage of not gentrifying reflect a suburb already established with stable, high-income ownership rather than one attracting new investment-driven demographic change. The working-age share fell 3.3 points over the decade while the senior share rose 8.6 points, reinforcing the aging trajectory that will shape household composition and service demand.
Historical + Forecast
Hamilton-Perry + Holt smoothing on ERP 2001-2025
Age Cohort Forecast
Primary Driver
Overseas Migration
Net Overseas / yr
+164
Net Internal / yr
+75
Gentrification Signal
Not gentrifying
Net internal migration +75/yr
National Ranking iPercentile rank among ~15,000 AU suburbs. 90% = higher than 90% of suburbs
How Glen Alpine compares to ~15,000 Australian suburbs
Frequently Asked Questions
Is Glen Alpine a good suburb to live in?
Glen Alpine suits families wanting large detached homes, with 98.5% separate houses and 93% having 4 or more bedrooms. Household income sits in the 94.5th percentile nationally and mortgage-to-income at 18.8% is comfortably below stress levels. The trade-off is high car dependence (90.2% drive) and an IRSD decile of 2, which flags some relative disadvantage despite strong income figures.
What is the median house price in Glen Alpine?
The median house price is $1,320,000 as of 2025, up from $1,311,500 in 2024, a 1.4% annual gain. Monthly mortgage repayments average $2,167, and the mortgage-to-income ratio sits at 18.8%, below the 30% stress threshold for local incomes.
What schools are in Glen Alpine?
No schools are recorded inside the Glen Alpine boundary in this dataset. The suburb has a population of 4,429 with 1,448 couples-with-children families, so most students attend schools in nearby Campbelltown or Minto. University qualifications among residents reach 36.0%, which is 5.9 points above the national figure.
Is Glen Alpine safe?
Detailed crime statistics are not available for Glen Alpine in this dataset. As an indirect indicator, the suburb has low housing stress (mortgage-to-income 18.8%, rent-to-income 21.4%), high owner-occupation at 91.9% combined (owned outright plus mortgage), and a volunteering rate of 12.4%, all consistent with a stable, low-turnover community. Only 88.2% of residents stayed in the same address the prior year.
Is Glen Alpine good for property investment?
The rental market is limited, with only 8.1% of dwellings rented and weekly rent of $570 implying a gross yield near 2.2% against the $1,320,000 median. Vacancy sits at a low 2.6% and rent grew 37.0% over the measured period. Overseas migration adds 164 net arrivals annually, providing steady demand support, but low renter share and slow 1.4% price growth moderate the investment case.
How is Glen Alpine's population changing?
Growth is slow at 0.35% per year, adding around 79 persons annually, with a 10-year population change of 4.9%. Overseas migration averaging 164 net arrivals per year is the primary driver. The suburb is aging, with the senior share rising 8.6 points and the working-age share falling 3.3 points over the past decade.
How much development is happening in Glen Alpine?
There were 23 development applications lodged in the past 12 months, mostly single dwelling houses and modifications to existing structures. This is modest activity consistent with an established suburb at 0.35% annual population growth, where infill and renovation dominate over new land subdivision.
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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