Mount Osmond, SA
By Lauren McCaleb · Reviewed by Dylan Duncan ·
Among Australia's more advantaged suburbs
Mount Osmond is more socio-economically advantaged than about 98% of the 14,462 Australian suburbs we score, based on the ABS SEIFA index (raw score 1141, 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.
Mount Osmond at a glance
- Population (2021)
- 464
- Median age
- 46
- Median weekly household income
- $2,777
- SEIFA score
- 1141
- Coordinates
- -34.9630, 138.6586
Mount Osmond demographics (2021 Census)
The figures below profile Mount Osmond 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 33%, 5% of homes are rented, and 25% of residents were born overseas.
Age profile
| Age group | People | Share |
|---|---|---|
| Children (0–14) | 78 | 17% |
| Youth (15–24) | 56 | 12% |
| Young adults (25–44) | 75 | 16% |
| Mid-life (45–64) | 151 | 33% |
| Seniors (65+) | 95 | 21% |
Share of the 455 people counted by age.
Housing and households
| Tenure | Dwellings | Share |
|---|---|---|
| Owned outright | 65 | 42% |
| Owned with a mortgage | 79 | 51% |
| Rented | 7 | 5% |
| Dwelling type | Dwellings | Share |
|---|---|---|
| Houses | 157 | 100% |
| Townhouses & semis | 0 | 0% |
| Flats & apartments | 0 | 0% |
Tenure and dwelling shares are of the roughly 157 occupied private dwellings in Mount Osmond.
- Median weekly rent
- $441
- Median monthly mortgage
- $2,599
- Average household size
- 2.8 people
- Median weekly family income
- $3,125
- Median weekly personal income
- $1,142
Community and culture
- Born overseas
- 114 (25%)
- Speaks a language other than English at home
- 67 (15%)
- Aboriginal and/or Torres Strait Islander
- 4 (1%)
Work and education
- Completed Year 12
- 300 (84%)
- Labour-force participation
- 64.5%
- Unemployment rate
- 4.5%
- Employed full-time
- 142
- Employed part-time
- 82
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 Mount Osmond
Based on 2014–2023 records, the warmest month in Mount Osmond 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 Mount Osmond
Where is Mount Osmond?
Mount Osmond is a suburb of South Australia, Australia.
What is the population of Mount Osmond?
At the 2021 Census, Mount Osmond had a population of about 464.
Is Mount Osmond an advantaged area?
Mount Osmond has an ABS SEIFA score of 1141, where about 1000 is the national average — higher scores indicate greater relative socio-economic advantage. That gives it a Suburb Score of 98 out of 100 — more socio-economically advantaged than about 98% of Australian suburbs.
What is the weather like in Mount Osmond?
Mount Osmond 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).
Where Mount Osmond ranks
Mount Osmond appears in these data-driven guides — each a transparent sort on a single ABS figure shown on this page.
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