Smithfield Plains, SA
By Lauren McCaleb · Reviewed by Dylan Duncan ·
Among Australia's less advantaged suburbs
Smithfield Plains is more socio-economically advantaged than about 1% of the 14,462 Australian suburbs we score, based on the ABS SEIFA index (raw score 761, 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.
Smithfield Plains at a glance
- Population (2021)
- 3,305
- Median age
- 29
- Median weekly household income
- $1,008
- SEIFA score
- 761
- Coordinates
- -34.6770, 138.6766
Smithfield Plains demographics (2021 Census)
The figures below profile Smithfield Plains 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 young adults (25–44) at 31%, 49% of homes are rented, and 22% of residents were born overseas.
Age profile
| Age group | People | Share |
|---|---|---|
| Children (0–14) | 887 | 27% |
| Youth (15–24) | 463 | 14% |
| Young adults (25–44) | 1,025 | 31% |
| Mid-life (45–64) | 620 | 19% |
| Seniors (65+) | 311 | 9% |
Share of the 3,306 people counted by age.
Housing and households
| Tenure | Dwellings | Share |
|---|---|---|
| Owned outright | 147 | 13% |
| Owned with a mortgage | 401 | 35% |
| Rented | 568 | 49% |
| Dwelling type | Dwellings | Share |
|---|---|---|
| Houses | 977 | 85% |
| Townhouses & semis | 130 | 11% |
| Flats & apartments | 45 | 4% |
Tenure and dwelling shares are of the roughly 1,152 occupied private dwellings in Smithfield Plains.
- Median weekly rent
- $251
- Median monthly mortgage
- $1,092
- Average household size
- 2.6 people
- Median weekly family income
- $1,225
- Median weekly personal income
- $511
Community and culture
- Born overseas
- 643 (22%)
- Speaks a language other than English at home
- 512 (17%)
- Aboriginal and/or Torres Strait Islander
- 214 (6%)
Work and education
- Completed Year 12
- 850 (37%)
- Labour-force participation
- 50.2%
- Unemployment rate
- 15.5%
- Employed full-time
- 537
- Employed part-time
- 423
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 Smithfield Plains
Based on 2014–2023 records, the warmest month in Smithfield Plains is January (average daytime high around 28.9°C) and the coolest is July (around 13°C). The area receives roughly 850 mm of rain across the year.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 28.9°C | 16.1°C | 31 mm |
| Feb | 27.5°C | 15.4°C | 28 mm |
| Mar | 25.2°C | 14.3°C | 23 mm |
| Apr | 21.2°C | 12°C | 55 mm |
| May | 16.4°C | 9.4°C | 90 mm |
| Jun | 13.7°C | 7.3°C | 112 mm |
| Jul | 13°C | 6.4°C | 132 mm |
| Aug | 13.8°C | 6.6°C | 141 mm |
| Sep | 16.6°C | 8°C | 87 mm |
| Oct | 20.6°C | 10.1°C | 63 mm |
| Nov | 23°C | 11.7°C | 58 mm |
| Dec | 26.5°C | 13.9°C | 30 mm |
Climate normals, 2014–2023 (Open-Meteo, ERA5 reanalysis).
Common questions about Smithfield Plains
Where is Smithfield Plains?
Smithfield Plains is a suburb of South Australia, Australia.
What is the population of Smithfield Plains?
At the 2021 Census, Smithfield Plains had a population of about 3,305.
Is Smithfield Plains an advantaged area?
Smithfield Plains has an ABS SEIFA score of 761, where about 1000 is the national average — higher scores indicate greater relative socio-economic advantage. That gives it a Suburb Score of 1 out of 100 — more socio-economically advantaged than about 1% of Australian suburbs.
What is the weather like in Smithfield Plains?
Smithfield Plains has average daytime highs of about 20.5°C and overnight lows of about 10.9°C, with roughly 850 mm of rain across the year (based on 2014–2023 climate normals).
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