Sefton
A 48.8% overseas-born share is Sefton's defining demographic marker, sitting 27.2 percentage points above the national figure. The suburb has 6,300 residents across 1.81 square kilometres, giving it a density of 3,471.5 people per square kilometre, while 70.0% of homes are separate houses. A median age of 35 is 5 years below the national level, and average household size is 3.3, or 0.8 above the national figure. Sefton's housing is more detached than apartment-led pockets around Bankstown, with Chester Hill and Birrong useful nearby comparisons for buyers assessing dwelling type and access. Its outlook is established rather than speculative: annual growth is 1.35%, overseas migration is the primary driver, and the gentrification stage is rated Not gentrifying.
Population
6,300
Median Age
35.0
Household IncomeiMedian weekly household income (ABS Census)
$1,528/wk
DAs (12 months)iDevelopment Applications lodged in the past year
45
Sefton suits buyers seeking a detached-house setting, but borrowing capacity needs careful testing. Mortgage commitments average $2,000 a month against household income of $1,528 a week, and mortgage stress is recorded at 30.2%, so repayment pressure is more important than a simple rent comparison. The housing mix is 70.0% separate houses, 14.0% semi-detached homes and 15.7% apartments. Three-bedroom homes account for 40.4% of stock and 4-plus-bedroom homes 33.9%, supporting family-oriented demand. Rent is $425 a week, while 34.0% rent, 32.1% own outright and 31.1% have a mortgage. Compared with its apartment share, the separate-house proportion is substantially higher. Nearby Chester Hill and Birrong are useful comparisons when checking whether a similar budget buys a different dwelling type or commute.
For Buyers
Sefton suits buyers seeking a detached-house setting, but borrowing capacity needs careful testing. Mortgage commitments average $2,000 a month against household income of $1,528 a week, and mortgage stress is recorded at 30.2%, so repayment pressure is more important than a simple rent comparison. The housing mix is 70.0% separate houses, 14.0% semi-detached homes and 15.7% apartments. Three-bedroom homes account for 40.4% of stock and 4-plus-bedroom homes 33.9%, supporting family-oriented demand. Rent is $425 a week, while 34.0% rent, 32.1% own outright and 31.1% have a mortgage. Compared with its apartment share, the separate-house proportion is substantially higher. Nearby Chester Hill and Birrong are useful comparisons when checking whether a similar budget buys a different dwelling type or commute.
For Investors
Sefton has a sizeable tenant base, with 34.0% of households renting and advertised rent at $425 a week. A 7.3% vacancy rate gives tenants more choice than a tightly held market, which can temper rent-setting power even after rent growth of 42.9%. The annual growth trend is 1.35%, driven primarily by overseas migration, providing a demand story linked to population movement rather than a short-lived redevelopment cycle. Development activity is also notable, with 47 applications in 12 months, including a recent attached dual occupancy adding 2 dwellings. The headline gentrification score is 19 and the stage is Not gentrifying, so investors should favour durable tenant demand and property condition over a rapid uplift thesis. Compared with a lower-turnover suburb, Sefton's 16.8% turnover rate may support steadier occupancy.
Development Activity
Total DAs
242
Last 12 Months
45
YoY ChangeiYear-over-year change in DA lodgements
-8.2%
Avg DA CostiAverage estimated cost per DA in the past year
N/A
Monthly DA Lodgements
DA Categories
Schools in Sefton
Open-register school locations for education access. This is not a school-quality ranking.
Demographics
Sefton's population profile is younger and more internationally connected than the national pattern. The median age is 35, which is 5 years below the national figure, while 48.8% of residents were born overseas, 27.2 percentage points above the national share. University qualification attainment is 35.1%, or 5.0 points above the national comparison, and average household size is 3.3, which is 0.8 above the national figure. Lebanese ancestry counts 1,081 people, Vietnamese 1,079 and Chinese 915, while Islam is recorded for 2,046 residents and Christianity for 1,790. Family households are prominent, with 55.2% couples with children and 20.8% one-parent families. For households comparing Sefton with nearby Chester Hill and Birrong, its large overseas-born share and 83.2% stay rate point to an established, settled community rather than a highly transient one.
Age Distribution
Bedrooms
Dwelling Structure
70.0%
Houses
14.0%
Townhouse
15.7%
Apartment
Tenure
Sefton's housing is anchored by detached stock, with 70.0% separate houses compared with 15.7% apartments and 14.0% semi-detached homes. Larger dwellings are common: 40.4% have 3 bedrooms and 33.9% have 4 or more, while 19.8% have 2 bedrooms and 5.9% have 0 or 1. Tenure is relatively mixed, with 32.1% owned outright, 31.1% mortgaged and 34.0% rented. The outright ownership share is lower than the renting share, which helps explain why tenant conditions remain important despite the detached-house character. Weekly rent is $425 and rent-to-income is 27.8%, below the 30.2% mortgage-to-income figure, while mortgage stress is flagged. Compared with its apartment proportion, Sefton's family-sized housing supply is higher, but the worsening affordability index, moving from 72.4 in 2011 to 77.4 in 2021, warrants caution.
Mortgage / mo
$2,000
Rent / wkiMedian weekly rent for new bonds (April to June 2026), NSW Rental Bond Board (DCJ). Census 2021 median: $425.
$750
Bond data Jun 2026 · houses $800 · units $600
HH Size
3.3
Personal Income / wk
$555
Vacancy Ratei% of dwellings unoccupied on Census night (ABS 2021)
7.3%
Unoccupied
140
Rent / IncomeiMedian rent as % of household income. Over 30% = housing stress
27.8%
Mortgage / IncomeiMedian mortgage as % of household income. Over 30% = housing stress
30.2% stressed
Community Profile
Languages Spoken at Home
Ancestry
Household Composition
55.2%
Couples with children
21.9%
Couples, no children
20.8%
Single parent
1,485
Total families
Economy & Employment
Sefton's employment base is led by healthcare at 17.3% and education at 10.5%, followed by transport at 9.2%, professional and technical work at 9.1%, and retail at 7.5%. This service-heavy mix is reflected in 469 professionals, 284 clerical and administrative workers, 234 trades workers, 227 machinery and driver roles, and 211 community and personal service workers. The labour force totals 2,201, with 1,017 employed full-time, 642 part-time and an unemployment rate of 6.7%. Household income sits at the 48.0 percentile, close to the middle rather than above-average levels. Social conditions are uneven: the education and occupation decile is 4, higher than the income and employment decile of 2, while the disadvantage decile is 1 and the advantage decile is 2. That spread indicates employment capability above the suburb's broader socioeconomic position, but lower income and disadvantage remain material constraints.
Unemployment
6.7%
Labour Force
2,201
Unemployed
147
Source: ABS Census 2021
Socio-Economic Indexes (SEIFA)iABS index ranking suburbs from 1 (most disadvantaged) to 10 (most advantaged)
Full-time
49.5%
Part-time
31.3%
Participation
44.3%
Employed
2,054
Full-time and part-time are shares of the employed. Source: ABS Census 2021
Occupations
Top Industries
University
35.1%
Postgraduate
7.9%
Born Overseas
48.8%
Dwellings
1,779
Transport to Work
Sefton is practical for residents who can use a car or work from home. Car driving accounts for 54.0% of travel, compared with 5.1% using public transport and 1.8% walking or cycling, while 34.8% work from home. That pattern suggests daily convenience is more dependent on private vehicles than in a transit-first suburb. Families have access to 2 local government schools: one secondary school and one infants school. Exact enrolment zones should be checked against the address because they can cut across suburb boundaries. The area is compact at 1.81 square kilometres, with density of 3,471.5 people per square kilometre, so local services and streets are relatively close together. Socioeconomic conditions are more constrained than in higher-ranked areas, with an IRSAD decile of 2 and an IRSD decile of 1. A 35 median age and 3.3-person average household size add to its family-oriented profile.
Drive
54.0%
Public Transport
5.1%
Walk / Cycle
1.8%
Work from Home
34.8%
Population Forecast
+1.35%/yr
(+294 people/yr)
EstablishedSefton's growth outlook is steady rather than rapid. The annual trend is 1.35%, and the wider-area population change over 10 years is 25.2%, with overseas migration identified as the primary driver. The trajectory is Stable, which is consistent with an established suburb where demand can build without relying on a single major project. Affordability is worsening, shifting from 72.4 in 2011 to 77.4 in 2021, while rents have grown by 42.9%, creating pressure for both residents and investors. The gentrification indicators need a measured reading: the main score is 19 with a stage of Not gentrifying, while the shift measure records a score of 39 and Early signs. Compared with a fast-changing renewal precinct, Sefton's lower-intensity growth profile favours gradual change driven by migration, household demand and incremental development.
Historical + Forecast
Hamilton-Perry + Holt smoothing on ERP 2001-2025
Age Cohort Forecast
Primary Driver
Overseas Migration
Net Overseas / yr
+285
Net Internal / yr
-243
Gentrification Signal
Not gentrifying
Population +26% since 2011, Net internal outflow -243/yr, Strong overseas inflow +285/yr
National Ranking iPercentile rank among ~15,000 AU suburbs. 90% = higher than 90% of suburbs
How Sefton compares to ~15,000 Australian suburbs
Frequently Asked Questions
Is Sefton a good suburb to live in?
Sefton can suit households wanting a detached-house setting, established local schools and a culturally diverse population. It has 6,300 residents, a median age of 35 and 70.0% separate houses. Car use is relatively important at 54.0%, while 34.8% work from home, so lifestyle fit depends on commuting needs and household budget.
What is the median house price in Sefton?
Check recent settled sales for the relevant period and dwelling type rather than relying on one broad suburb estimate. Sefton has 70.0% separate houses, 14.0% semi-detached homes and 15.7% apartments, so prices can vary substantially by property form. Mortgage repayments average $2,000 a month and weekly rent is $425.
What schools are in Sefton?
Sefton has 2 local government schools: Sefton High School, a secondary school, and Sefton Infants School, an infants school. Families should confirm the current enrolment zone for the exact address, particularly when comparing nearby suburbs or properties close to the suburb boundary.
Is Sefton safe?
Safety should be checked using current NSW Police crime statistics and by visiting the specific streets at different times. Sefton has 6,300 residents within 1.81 square kilometres, so local conditions can vary over a short distance. Buyers and renters should also consider lighting, parking, activity around transport routes and the immediate property's surroundings.
Is Sefton good for property investment?
Sefton has several investor positives: 34.0% of households rent, weekly rent is $425, annual growth is 1.35% and overseas migration is the main growth driver. Vacancy is 7.3%, while 47 development applications in 12 months indicate ongoing activity. The gentrification stage is Not gentrifying, so returns should be assessed on durable tenant demand rather than a rapid uplift assumption.
How is Sefton's population changing?
Sefton has 6,300 residents today, while population change across the wider area is 25.2% over 10 years. The annual trend is 1.35% and overseas migration is the primary driver. The trajectory is Stable, and the gentrification score is 19 with a stage of Not gentrifying, pointing to gradual established-suburb change rather than a sudden transformation.
What languages are spoken in Sefton?
Arabic is the most recorded non-English language, with 668 speakers, followed by Cantonese at 171, Mandarin at 138, Urdu at 80 and Greek at 31. This aligns with Sefton's 48.8% overseas-born share, which is 27.2 percentage points above the national comparison.
What development is occurring in Sefton?
There were 47 development applications in the past 12 months. Recent examples include a dwelling house and an attached dual occupancy involving 2 dwellings. This points to incremental infill and replacement housing rather than a single large project, so buyers should check the immediate street and planning history before purchasing.
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 education open registers (school locations), 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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