Trinity Gardens, SA
By Lauren McCaleb · Reviewed by Dylan Duncan ·
Among Australia's more advantaged suburbs
Trinity Gardens is more socio-economically advantaged than about 88% of the 14,462 Australian suburbs we score, based on the ABS SEIFA index (raw score 1067, where about 1000 is the national average).
A socio-economic measure from ABS Census data — not a measure of how good a suburb is to live in or visit. How we calculate this.
Trinity Gardens at a glance
- Population (2021)
- 1,264
- Median age
- 40
- Median weekly household income
- $2,006
- SEIFA score
- 1067
- Coordinates
- -34.9110, 138.6447
Trinity Gardens demographics (2021 Census)
The figures below profile Trinity Gardens using the Australian Bureau of Statistics 2021 Census; every percentage is a share of a clearly stated Census count, so each one traces back to the source. At a glance, the largest age group is mid-life (45–64) at 28%, 26% of homes are rented, and 28% of residents were born overseas.
Age profile
| Age group | People | Share |
|---|---|---|
| Children (0–14) | 221 | 17% |
| Youth (15–24) | 178 | 14% |
| Young adults (25–44) | 307 | 24% |
| Mid-life (45–64) | 350 | 28% |
| Seniors (65+) | 215 | 17% |
Share of the 1,271 people counted by age.
Housing and households
| Tenure | Dwellings | Share |
|---|---|---|
| Owned outright | 201 | 42% |
| Owned with a mortgage | 145 | 30% |
| Rented | 127 | 26% |
| Dwelling type | Dwellings | Share |
|---|---|---|
| Houses | 373 | 77% |
| Townhouses & semis | 62 | 13% |
| Flats & apartments | 49 | 10% |
Tenure and dwelling shares are of the roughly 484 occupied private dwellings in Trinity Gardens.
- Median weekly rent
- $375
- Median monthly mortgage
- $2,184
- Average household size
- 2.6 people
- Median weekly family income
- $2,639
- Median weekly personal income
- $923
Community and culture
- Born overseas
- 355 (28%)
- Speaks a language other than English at home
- 356 (28%)
- Aboriginal and/or Torres Strait Islander
- 4 (0%)
Work and education
- Completed Year 12
- 703 (71%)
- Labour-force participation
- 70.7%
- Unemployment rate
- 3.7%
- Employed full-time
- 383
- Employed part-time
- 292
Source: ABS Census of Population and Housing, 2021 (General Community Profile, by Suburb and Locality). © Australian Bureau of Statistics, released under CC BY 4.0. How we group bands and derive each share is set out on our methodology page.
Weather and climate in Trinity Gardens
Based on 2014–2023 records, the warmest month in Trinity Gardens is January (average daytime high around 29.7°C) and the coolest is July (around 14.4°C). The area receives roughly 732 mm of rain across the year.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 29.7°C | 17°C | 34 mm |
| Feb | 28.2°C | 16.4°C | 32 mm |
| Mar | 26°C | 15.4°C | 23 mm |
| Apr | 22.1°C | 13.5°C | 54 mm |
| May | 17.7°C | 11.2°C | 83 mm |
| Jun | 15.1°C | 9.3°C | 91 mm |
| Jul | 14.4°C | 8.5°C | 102 mm |
| Aug | 15.3°C | 8.4°C | 91 mm |
| Sep | 18°C | 9.7°C | 69 mm |
| Oct | 21.9°C | 11.5°C | 59 mm |
| Nov | 24.1°C | 13°C | 57 mm |
| Dec | 27.3°C | 15°C | 37 mm |
Climate normals, 2014–2023 (Open-Meteo, ERA5 reanalysis).
Common questions about Trinity Gardens
Where is Trinity Gardens?
Trinity Gardens is a suburb of South Australia, Australia.
What is the population of Trinity Gardens?
At the 2021 Census, Trinity Gardens had a population of about 1,264.
Is Trinity Gardens an advantaged area?
Trinity Gardens has an ABS SEIFA score of 1067, where about 1000 is the national average — higher scores indicate greater relative socio-economic advantage. That gives it a Suburb Score of 88 out of 100 — more socio-economically advantaged than about 88% of Australian suburbs.
What is the weather like in Trinity Gardens?
Trinity Gardens has average daytime highs of about 21.7°C and overnight lows of about 12.4°C, with roughly 732 mm of rain across the year (based on 2014–2023 climate normals).
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