Duncan, SA
By Lauren McCaleb · Reviewed by Dylan Duncan ·
Around the national middle
Duncan is more socio-economically advantaged than about 56% of the 14,462 Australian suburbs we score, based on the ABS SEIFA index (raw score 997, 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.
Duncan at a glance
- Population (2021)
- 67
- Median age
- 32
- Median weekly household income
- $1,875
- SEIFA score
- 997
- Coordinates
- -35.7502, 137.1234
Duncan demographics (2021 Census)
The figures below profile Duncan 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 36%, 22% of homes are rented, and 8% of residents were born overseas.
Age profile
| Age group | People | Share |
|---|---|---|
| Children (0–14) | 19 | 26% |
| Youth (15–24) | 6 | 8% |
| Young adults (25–44) | 26 | 36% |
| Mid-life (45–64) | 13 | 18% |
| Seniors (65+) | 8 | 11% |
Share of the 72 people counted by age.
Housing and households
| Tenure | Dwellings | Share |
|---|---|---|
| Owned outright | 6 | 33% |
| Owned with a mortgage | 8 | 44% |
| Rented | 4 | 22% |
| Dwelling type | Dwellings | Share |
|---|---|---|
| Houses | 21 | 100% |
| Townhouses & semis | 0 | 0% |
| Flats & apartments | 0 | 0% |
Tenure and dwelling shares are of the roughly 21 occupied private dwellings in Duncan.
- Median weekly rent
- $158
- Median monthly mortgage
- $550
- Average household size
- 2.5 people
- Median weekly family income
- $2,166
- Median weekly personal income
- $1,017
Community and culture
- Born overseas
- 5 (8%)
- Speaks a language other than English at home
- 6 (10%)
- Aboriginal and/or Torres Strait Islander
- 0 (0%)
Work and education
- Completed Year 12
- 32 (62%)
- Labour-force participation
- 79.2%
- Unemployment rate
- 4.8%
- Employed full-time
- 27
- Employed part-time
- 9
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.
Common questions about Duncan
Where is Duncan?
Duncan is a suburb of South Australia, Australia.
What is the population of Duncan?
At the 2021 Census, Duncan had a population of about 67.
Is Duncan an advantaged area?
Duncan has an ABS SEIFA score of 997, where about 1000 is the national average — higher scores indicate greater relative socio-economic advantage. That gives it a Suburb Score of 56 out of 100 — more socio-economically advantaged than about 56% of Australian suburbs.
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