Suburb profile · ABS Census 2021
Trinity Gardens suburb profile
Trinity Gardens, SA · Postcode 5068
This Trinity Gardens suburb profile summarises official Australian Bureau of Statistics Census 2021 data for Trinity Gardens, SA (postcode 5068). 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 Trinity Gardens with nearby suburbs.
Trinity Gardens at a glance
Population
1,264
Median rent
$375/wk
Household income
$2,006/wk
Median age
40
Trinity Gardens 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
+6.9% over 10 years
Population
1,264
was 1,234 in 2016
+30 · +2.4%
Median rent
$375/wk
was $330/wk in 2016
+$45 · +13.6%
Household income
$2,006/wk
was $1,592/wk in 2016
+$414 · +26%
Median age
40
was 41 in 2016
-1 · -2.4%
Dig deeper: Trinity Gardens population growth · Trinity Gardens then and now
Trinity Gardens vs nearby & Greater Adelaide
Median Census 2021 figures for Trinity Gardens, nearby suburbs (8), and the Adelaide metro median (suburbs with 1,000+ people).
Rent
+15% vs area
- Trinity Gardens$375/wk
- Nearby$348/wk
- Adelaide$326/wk
Household income
+24.8% vs area
- Trinity Gardens$2,006/wk
- Nearby$1,725/wk
- Adelaide$1,607/wk
Median age
0% vs area
- Trinity Gardens40
- Nearby41.5
- Adelaide40
Personal income
+15.5% vs area
- Trinity Gardens$923/wk
- Nearby$901.5/wk
- Adelaide$799/wk
Nearby uses the same postcode first, then larger suburbs in SA. See Adelaide rankings.
Socio-economic profile
How Trinity Gardens compares to other Australian suburbs on income, education and occupation — from official ABS SEIFA 2021 data.
Trinity Gardens ranks among Australia's most advantaged suburbs. It shows high education and occupation levels.
Relative disadvantage (IRSD)
Decile 81,058.7
Lower score / decile = more relative disadvantage
Advantage & disadvantage (IRSAD)
Decile 91,067.3
Higher score / decile = more relative advantage
Economic resources (IER)
Decile 51,023
Access to economic resources (income, housing)
Education & occupation (IEO)
Decile 101,090.2
Education and occupational skill levels
Source: ABS SEIFA 2021. See methodology.
Trinity Gardens on the map
OpenStreetMap outline for Trinity Gardens, SA.
Map data © OpenStreetMap contributors. Boundary matching is approximate.
Trinity Gardens people
- Population
- 1,264
- Median age
- 40
- Born overseas
- 28.1%
- Average household size
- 2.6
Total usual residents (Census 2021)
Median age of residents in years
Percentage born outside Australia
Average number of people per household
Trinity Gardens income
- Median household income
- $2,006/wk
- Median personal income
- $923/wk
Median total weekly household income
Median total weekly personal income
Trinity Gardens housing
- Median rent
- $375/wk
- Median mortgage repayment
- $2,184/mo
- Separate houses
- 72.3%
- Flats & apartments
- 9.5%
- Owned outright
- 39%
- Mortgaged
- 28.1%
- Rented
- 24.6%
- Unoccupied dwellings
- 6%
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
Trinity Gardens work
- Employment to population
- 68.1%
- Unemployment rate
- 3.3%
- Year 12 or above
- 71.4%
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 5068)
Compare Trinity Gardens with nearby suburbs
Trinity Gardens in numbers
Trinity Gardens had 1,264 residents at the 2021 Census, making it the 383rd most populous suburb or locality in SA out of 1,624. The median age is 40, 5% below the typical SA suburb. The average household has 2.6 people. 28.1% of residents were born overseas.
Among occupied homes, 39% own their home outright, 28.1% are paying a mortgage, 24.6% rent. Separate houses make up 72.3% of dwellings, with 9.5% in flats or apartments. Median rent was $375/wk, 21% above the typical SA suburb.
Median household income was $2,006/wk, 31% above the typical SA suburb. The unemployment rate on Census night was 3.3%. 71.4% 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 2.4% (from 1,234 to 1,264). Median rent moved from $330/wk to $375/wk (+13.6%).
Trinity Gardens suburb FAQs
- What is the median rent in Trinity Gardens, SA?
- The median weekly rent in Trinity Gardens was $375/wk at the 2021 Census (ABS).
- How many people live in Trinity Gardens, SA?
- Trinity Gardens had 1,264 residents at the 2021 Census, up 2.4% from 2016.
- What is the median household income in Trinity Gardens?
- Median household income in Trinity Gardens was $2,006/wk at the 2021 Census.
- Do most people rent or own in Trinity Gardens?
- 24.6% of occupied homes in Trinity Gardens were rented, 39% were owned outright and 28.1% were owned with a mortgage.
About this Trinity Gardens suburb profile
Figures are from the ABS Census of Population and Housing 2021 (General Community Profile) for the Suburbs and Localities boundary matching Trinity Gardens. 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