54,771 ▲ +8.2%
Lower than 56% of sub-region (sa3) areas.
- 2011: 50,613
- 2016: 54,609
- 2021: 54,771
The number of people who usually live in the area, counted on Census night.
Marrickville - Sydenham - Petersham · Sub-region (SA3)
Demographics & Identity in Marrickville - Sydenham - Petersham
Who lives here — how many people, how old they are, and how communities identify.
A typical resident in Marrickville - Sydenham - Petersham is 36, making the area noticeably younger than the New South Wales average. This region is shaped by a heavy concentration of young adults, with over 39% of people aged between 25 and 44. It is a fast-growing area that added over 4,000 people between 2011 and 2021.
54,771
▲ +8.2%
- 1–2: 3 areas
- 2–2: 0 areas
- 2–4: 0 areas
- 4–6: 0 areas
- 6–9: 2 areas
- 9–15: 2 areas
- 15–23: 1 area
- 23–37: 0 areas
- 37–57: 1 area
- 57–90: 0 areas
- 90–141: 1 area
- 141–221: 1 area
- 221–347: 1 area
- 347–545: 2 areas
- 545–854: 3 areas
- 854–1,340: 0 areas
- 1,340–2,101: 3 areas
- 2,101–3,296: 1 area
- 3,296–5,169: 2 areas
- 5,169–8,107: 3 areas
- 8,107–12,714: 7 areas
- 12,714–19,940: 16 areas
- 19,940–31,273: 30 areas
- 31,273–49,048: 61 areas
- 49,048–76,924: 90 areas
- 76,924–120,643: 70 areas
- 120,643–189,211: 46 areas
- 189,211–296,748: 12 areas
All sub-region (sa3) areas, 2021. The marker is Marrickville - Sydenham - Petersham — lower than 56% of areas.
| Marrickville - Sydenham - Petersham | 54,771 |
|---|---|
| Greater Sydney | 5,231,147 |
| New South Wales | 8,072,163 |
| Australia | 25,422,788 |
Population
How many people, and the typical age.
The total population grew 8.2% since 2011 to reach 54,771 people. The typical age has remained steady at 36 years, which is a little younger than the national figure.
36 yrs → 0.0%
Younger than 79% of sub-region (sa3) areas.
- 2011: 36 yrs
- 2016: 35 yrs
- 2021: 36 yrs
Half the population is older than this age, and half younger.
Age profile
How the population splits across age groups.
Children under 15 and seniors over 65 are both well below the state and national figures, at 13.3% and 12.9% respectively. This reflects an age structure dominated by adults, with 63.5% of the population aged between 25 and 64.
12.9% ▲ +16.4%
Lower than 80% of sub-region (sa3) areas.
- 2011: 11.1%
- 2016: 11.6%
- 2021: 12.9%
Share of the population aged 65 years and over.
13.3% ▼ -9.5%
Lower than 89% of sub-region (sa3) areas.
- 2011: 14.7%
- 2016: 14.0%
- 2021: 13.3%
Share of the population aged under 15 years.
Age structure
View on map →In Marrickville - Sydenham - Petersham, the largest group is Young adults (25–44) at 40%, followed by Older adults (45–64) (24%) and Children (0–14) (13%).
Identity & relationships
First Nations identity and marital status.
De facto relationships are very common here at 19.8%, a figure well above the New South Wales average of 10.6%. Meanwhile, Aboriginal and Torres Strait Islander people make up 1.6% of the population, which is a little below the national figure.
1.6% ▼ -1.1%
Lower than 67% of sub-region (sa3) areas.
- 2011: 1.6%
- 2016: 1.5%
- 2021: 1.6%
Share of people who identify as Aboriginal and/or Torres Strait Islander.
19.8% ▲ +32.7%
Higher than 99% of sub-region (sa3) areas.
- 2011: 14.9%
- 2016: 17.4%
- 2021: 19.8%
Share of people aged 15+ who are in a de facto marriage (registered marriages excluded).
Marital status
View on map →In Marrickville - Sydenham - Petersham, Never married is the majority at 54%; Married is next at 32%.
Age & sex structure
Sources
- Census of Population and Housing — Australian Bureau of Statistics, 2021 (CC BY 4.0).
More for Marrickville - Sydenham - Petersham
Cite this page
Australian Bureau of Statistics. (2021). Demographics & Identity in Marrickville - Sydenham - Petersham [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/sa3/11702/marrickville-sydenham-petersham/topic/demographics-identity