Suburb profile · ABS Census 2021
St Clair suburb profile
St Clair, SA · Postcode 5011
This St Clair suburb profile summarises official Australian Bureau of Statistics Census 2021 data for St Clair, SA (postcode 5011). Use it as a free suburb report covering population, median rent, household income, age, housing tenure and employment, plus how those figures changed since Census 2016— then compare St Clair with nearby suburbs.
St Clair at a glance
Population
2,634
Median rent
$360/wk
Household income
$1,890/wk
Median age
32
St Clair trends (2016 → 2021)
Change since the previous Census. Historical figures are mapped from State Suburbs (SSC) to today's suburb boundaries.
Population
Census 2011 → 2016 → 2021
+1160.3% over 10 years
Population
2,634
was 1,712 in 2016
+922 · +53.9%
Median rent
$360/wk
was $340/wk in 2016
+$20 · +5.9%
Household income
$1,890/wk
was $1,534/wk in 2016
+$356 · +23.2%
Median age
32
was 30 in 2016
+2 · +6.7%
Dig deeper: St Clair population growth · St Clair then and now
St Clair vs nearby & Greater Adelaide
Median Census 2021 figures for St Clair, nearby suburbs (8), and the Adelaide metro median (suburbs with 1,000+ people).
Rent
+10.4% vs area
- St Clair$360/wk
- Nearby$300/wk
- Adelaide$326/wk
Household income
+17.6% vs area
- St Clair$1,890/wk
- Nearby$1,452/wk
- Adelaide$1,607/wk
Median age
-20% vs area
- St Clair32
- Nearby35.5
- Adelaide40
Personal income
+32% vs area
- St Clair$1,055/wk
- Nearby$696.5/wk
- Adelaide$799/wk
Nearby uses the same postcode first, then larger suburbs in SA. See Adelaide rankings.
Socio-economic profile
How St Clair compares to other Australian suburbs on income, education and occupation — from official ABS SEIFA 2021 data.
St Clair ranks among Australia's most advantaged suburbs. It shows limited economic resources and high education and occupation levels.
Relative disadvantage (IRSD)
Decile 81,051.6
Lower score / decile = more relative disadvantage
Advantage & disadvantage (IRSAD)
Decile 91,047.5
Higher score / decile = more relative advantage
Economic resources (IER)
Decile 3986.5
Access to economic resources (income, housing)
Education & occupation (IEO)
Decile 101,078.8
Education and occupational skill levels
Source: ABS SEIFA 2021. See methodology.
St Clair on the map
OpenStreetMap outline for St Clair, SA.
Map data © OpenStreetMap contributors. Boundary matching is approximate.
St Clair people
- Population
- 2,634
- Median age
- 32
- Born overseas
- 37.4%
- Average household size
- 2.3
Total usual residents (Census 2021)
Median age of residents in years
Percentage born outside Australia
Average number of people per household
St Clair income
- Median household income
- $1,890/wk
- Median personal income
- $1,055/wk
Median total weekly household income
Median total weekly personal income
St Clair housing
- Median rent
- $360/wk
- Median mortgage repayment
- $1,733/mo
- Separate houses
- 31.6%
- Flats & apartments
- 16.7%
- Owned outright
- 10.8%
- Mortgaged
- 44.8%
- Rented
- 38.4%
- Unoccupied dwellings
- 5.2%
Median weekly rent for rented dwellings
Median monthly mortgage repayment
Percentage of dwellings that are separate houses
Percentage of dwellings that are flats or apartments
Percentage of dwellings owned without a mortgage
Percentage of dwellings with a mortgage
Percentage of dwellings rented
Percentage of private dwellings unoccupied on Census night
St Clair work
- Employment to population
- 74.6%
- Unemployment rate
- 3.5%
- Year 12 or above
- 74.7%
Employed persons as a percentage of population aged 15+
Unemployed persons as a percentage of the labour force
Percentage with Year 12 or equivalent as highest school level
Nearby suburb profiles (near 5011)
Compare St Clair with nearby suburbs
St Clair in numbers
St Clair had 2,634 residents at the 2021 Census, making it the 240th most populous suburb or locality in SA out of 1,624. The median age is 32, 24% below the typical SA suburb. The average household has 2.3 people. 37.4% of residents were born overseas.
Among occupied homes, 10.8% own their home outright, 44.8% are paying a mortgage, 38.4% rent. Separate houses make up 31.6% of dwellings, with 16.7% in flats or apartments. Median rent was $360/wk, 16% above the typical SA suburb.
Median household income was $1,890/wk, 24% above the typical SA suburb. The unemployment rate on Census night was 3.5%. 74.7% of adults had completed Year 12 or above. On the ABS SEIFA index of relative socio-economic disadvantage it sits in decile 8 nationally (1 is most disadvantaged, 10 least).
Between the 2016 and 2021 Censuses the population grew 53.9% (from 1,712 to 2,634). Median rent moved from $340/wk to $360/wk (+5.9%).
St Clair suburb FAQs
- What is the median rent in St Clair, SA?
- The median weekly rent in St Clair was $360/wk at the 2021 Census (ABS).
- How many people live in St Clair, SA?
- St Clair had 2,634 residents at the 2021 Census, up 53.9% from 2016.
- What is the median household income in St Clair?
- Median household income in St Clair was $1,890/wk at the 2021 Census.
- Do most people rent or own in St Clair?
- 38.4% of occupied homes in St Clair were rented, 10.8% were owned outright and 44.8% were owned with a mortgage.
About this St Clair suburb profile
Figures are from the ABS Census of Population and Housing 2021 (General Community Profile) for the Suburbs and Localities boundary matching St Clair (SA). Where shown, 2016 values come from the 2016 State Suburbs (SSC) profile, linked via ABS geographic correspondence — boundaries are not always identical. Medians may be suppressed for very small areas. This is not financial or relocation advice — use it alongside current market data.
Source: ABS Census 2021. Methodology · Richest suburbs in Adelaide