77,950 ▲ +3.0%
Higher than 64% of sub-region (sa3) areas.
- 2011: 75,697
- 2016: 76,694
- 2021: 77,950
The number of people who usually live in the area, counted on Census night.
Blue Mountains · Sub-region (SA3)
Demographics & Identity in Blue Mountains
Who lives here — how many people, how old they are, and how communities identify.
Nearly half of the 77,950 residents in the Blue Mountains are married, marking it as a region with a strong presence of established couples. This is an aging community where the typical resident is now 45, making the area noticeably older than the rest of New South Wales.
77,950
▲ +3.0%
- 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 Blue Mountains — higher than 64% of areas.
| Blue Mountains | 77,950 |
|---|---|
| Greater Sydney | 5,231,147 |
| New South Wales | 8,072,163 |
| Australia | 25,422,788 |
Population
How many people, and the typical age.
The population grew by 3% since 2011, adding about 2,253 people. The typical age has risen by 3 years since 2011, reaching 45, which is much higher than most similar areas.
45 yrs ▲ +7.1%
Older than 79% of sub-region (sa3) areas.
- 2011: 42 yrs
- 2016: 44 yrs
- 2021: 45 yrs
Half the population is older than this age, and half younger.
Age profile
How the population splits across age groups.
Seniors aged 65 and over make up 22.4% of the population, a figure well above the national average. This shift is part of a clear trend, as the proportion of older people rose by 6.8 percentage points since 2011.
22.4% ▲ +43.5%
Higher than 79% of sub-region (sa3) areas.
- 2011: 15.6%
- 2016: 19.5%
- 2021: 22.4%
Share of the population aged 65 years and over.
17.5% ▼ -10.5%
Lower than 55% of sub-region (sa3) areas.
- 2011: 19.5%
- 2016: 18.3%
- 2021: 17.5%
Share of the population aged under 15 years.
Age structure
View on map →In Blue Mountains, the largest group is Older adults (45–64) at 28%, followed by Seniors (65+) (22%) and Young adults (25–44) (21%).
Identity & relationships
First Nations identity and marital status.
Aboriginal and Torres Strait Islander people make up 2.7% of the population, which is about the same as the New South Wales figure. De facto relationships rose to 12.1% since the last census, which is slightly above the state average.
2.7% ▲ +55.0%
Higher than 50% of sub-region (sa3) areas.
- 2011: 1.7%
- 2016: 2.4%
- 2021: 2.7%
Share of people who identify as Aboriginal and/or Torres Strait Islander.
12.1% ▲ +26.8%
Lower than 53% of sub-region (sa3) areas.
- 2011: 9.5%
- 2016: 10.9%
- 2021: 12.1%
Share of people aged 15+ who are in a de facto marriage (registered marriages excluded).
Marital status
View on map →In Blue Mountains, the largest group is Married at 48%, followed by Never married (33%) and Divorced (11%).
Age & sex structure
Sources
- Census of Population and Housing — Australian Bureau of Statistics, 2021 (CC BY 4.0).
More for Blue Mountains
Cite this page
Australian Bureau of Statistics. (2021). Demographics & Identity in Blue Mountains [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/sa3/12401/blue-mountains/topic/demographics-identity