Hillier, SA
By Lauren McCaleb · Reviewed by Dylan Duncan ·
Among Australia's less advantaged suburbs
Hillier is more socio-economically advantaged than about 15% of the 14,462 Australian suburbs we score, based on the ABS SEIFA index (raw score 912, 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.
Hillier at a glance
- Population (2021)
- 814
- Median age
- 67
- Median weekly household income
- $712
- SEIFA score
- 912
- Coordinates
- -34.6234, 138.6921
Hillier demographics (2021 Census)
The figures below profile Hillier 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 seniors (65+) at 55%, 7% of homes are rented, and 33% of residents were born overseas.
Age profile
| Age group | People | Share |
|---|---|---|
| Children (0–14) | 88 | 11% |
| Youth (15–24) | 34 | 4% |
| Young adults (25–44) | 92 | 11% |
| Mid-life (45–64) | 157 | 19% |
| Seniors (65+) | 448 | 55% |
Share of the 819 people counted by age.
Housing and households
| Tenure | Dwellings | Share |
|---|---|---|
| Owned outright | 297 | 70% |
| Owned with a mortgage | 63 | 15% |
| Rented | 31 | 7% |
| Dwelling type | Dwellings | Share |
|---|---|---|
| Houses | 151 | 35% |
| Townhouses & semis | 275 | 65% |
| Flats & apartments | 0 | 0% |
Tenure and dwelling shares are of the roughly 426 occupied private dwellings in Hillier.
- Median weekly rent
- $255
- Median monthly mortgage
- $1,473
- Average household size
- 1.9 people
- Median weekly family income
- $996
- Median weekly personal income
- $512
Community and culture
- Born overseas
- 251 (33%)
- Speaks a language other than English at home
- 49 (6%)
- Aboriginal and/or Torres Strait Islander
- 3 (0%)
Work and education
- Completed Year 12
- 196 (27%)
- Labour-force participation
- 30.1%
- Unemployment rate
- 3.6%
- Employed full-time
- 124
- Employed part-time
- 77
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 Hillier
Based on 2014–2023 records, the warmest month in Hillier is January (average daytime high around 30.3°C) and the coolest is July (around 14.3°C). The area receives roughly 498 mm of rain across the year.
| Month | Avg high | Avg low | Rain |
|---|---|---|---|
| Jan | 30.3°C | 16.7°C | 31 mm |
| Feb | 28.9°C | 16°C | 22 mm |
| Mar | 26.7°C | 14.7°C | 20 mm |
| Apr | 22.7°C | 12.4°C | 41 mm |
| May | 18°C | 9.6°C | 49 mm |
| Jun | 15.1°C | 7.4°C | 54 mm |
| Jul | 14.3°C | 6.8°C | 56 mm |
| Aug | 14.9°C | 6.8°C | 64 mm |
| Sep | 17.8°C | 8.1°C | 49 mm |
| Oct | 22.2°C | 10.5°C | 43 mm |
| Nov | 24.8°C | 12.4°C | 42 mm |
| Dec | 28.2°C | 14.6°C | 27 mm |
Climate normals, 2014–2023 (Open-Meteo, ERA5 reanalysis).
Common questions about Hillier
Where is Hillier?
Hillier is a suburb of South Australia, Australia.
What is the population of Hillier?
At the 2021 Census, Hillier had a population of about 814.
Is Hillier an advantaged area?
Hillier has an ABS SEIFA score of 912, where about 1000 is the national average — higher scores indicate greater relative socio-economic advantage. That gives it a Suburb Score of 15 out of 100 — more socio-economically advantaged than about 15% of Australian suburbs.
What is the weather like in Hillier?
Hillier has average daytime highs of about 22°C and overnight lows of about 11.3°C, with roughly 498 mm of rain across the year (based on 2014–2023 climate normals).
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