Sydney - Outer West and Blue Mountains · Region (SA4)

Demographics & Identity in Sydney - Outer West and Blue Mountains

Who lives here — how many people, how old they are, and how communities identify.

Over 20% of the population are children under 15, making Sydney - Outer West and Blue Mountains much more family-oriented than most similar areas. This region is a little younger than the state and national figures, with a total population of 332,056 that has grown by 15% since 2011.

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📍 Sydney - Outer West and Blue Mountains, Region (SA4)

Where Sydney - Outer West and Blue Mountains sits — Total population

332,056 ▲ +15.2%
  • 1–2: 3 areas
  • 2–3: 0 areas
  • 3–4: 0 areas
  • 4–7: 0 areas
  • 7–11: 1 area
  • 11–19: 1 area
  • 19–30: 1 area
  • 30–50: 1 area
  • 50–81: 0 areas
  • 81–132: 1 area
  • 132–214: 1 area
  • 214–349: 0 areas
  • 349–569: 1 area
  • 569–927: 1 area
  • 927–1,511: 1 area
  • 1,511–2,461: 0 areas
  • 2,461–4,010: 2 areas
  • 4,010–6,532: 1 area
  • 6,532–10,641: 2 areas
  • 10,641–17,336: 2 areas
  • 17,336–28,242: 0 areas
  • 28,242–46,009: 1 area
  • 46,009–74,953: 0 areas
  • 74,953–122,107: 9 areas
  • 122,107–198,924: 21 areas
  • 198,924–324,066: 28 areas
  • 324,066–527,936: 21 areas
  • 527,936–860,060: 8 areas

All region (sa4) areas, 2021. The marker is Sydney - Outer West and Blue Mountains — higher than 74% of areas.

Total population compared with the state and national average
Sydney - Outer West and Blue Mountains332,056
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 has grown by about 43,868 people since 2011. The typical resident is now 37, which is a little younger than the national figure of 38.

332,056 ▲ +15.2%

Higher than 74% of region (sa4) areas.

  • 2011: 288,188
  • 2016: 306,933
  • 2021: 332,056

The number of people who usually live in the area, counted on Census night.

37 yrs ▲ +2.8%

Younger than 71% of region (sa4) areas.

  • 2011: 36 yrs
  • 2016: 37 yrs
  • 2021: 37 yrs

Half the population is older than this age, and half younger.

Age profile

How the population splits across age groups.

Children under 15 make up 20.1% of the area, which is much higher than most other regions. While the proportion of seniors is a little below the national figure at 15.6%, this group has grown by 4.2 percentage points since 2011.

15.6% ▲ +36.5%

Lower than 60% of region (sa4) areas.

  • 2011: 11.4%
  • 2016: 13.9%
  • 2021: 15.6%

Share of the population aged 65 years and over.

20.1% ▼ -4.9%

Higher than 86% of region (sa4) areas.

  • 2011: 21.2%
  • 2016: 20.2%
  • 2021: 20.1%

Share of the population aged under 15 years.

Age structure

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Sydney - Outer West and Blue Mountains splits fairly evenly between Young adults (25–44) (28%) and Older adults (45–64) (24%), with Children (0–14) at 20%.

Identity & relationships

First Nations identity and marital status.

Aboriginal and Torres Strait Islander people make up 4.6% of the population, which is higher than most areas and a little above the national figure. Most residents are married (46%), while those in de facto relationships (11.5%) are fewer than in most other areas.

11.5% ▲ +24.5%

Lower than 69% of region (sa4) areas.

  • 2011: 9.2%
  • 2016: 10.6%
  • 2021: 11.5%

Share of people aged 15+ who are in a de facto marriage (registered marriages excluded).

Marital status

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In Sydney - Outer West and Blue Mountains, the largest group is Married at 46%, followed by Never married (37%) and Divorced (9%).

Age & sex structure

  • 85+: 85+: 1,866 males; 85+: 3,373 females
  • 80–84: 80–84: 2,596 males; 80–84: 3,293 females
  • 75–79: 75–79: 4,451 males; 75–79: 5,015 females
  • 70–74: 70–74: 6,955 males; 70–74: 7,588 females
  • 65–69: 65–69: 7,848 males; 65–69: 8,669 females
  • 60–64: 60–64: 9,103 males; 60–64: 10,094 females
  • 55–59: 55–59: 9,504 males; 55–59: 10,057 females
  • 50–54: 50–54: 10,023 males; 50–54: 10,632 females
  • 45–49: 45–49: 10,669 males; 45–49: 10,976 females
  • 40–44: 40–44: 10,844 males; 40–44: 11,059 females
  • 35–39: 35–39: 11,589 males; 35–39: 12,259 females
  • 30–34: 30–34: 11,337 males; 30–34: 12,277 females
  • 25–29: 25–29: 10,927 males; 25–29: 11,272 females
  • 20–24: 20–24: 10,590 males; 20–24: 9,985 females
  • 15–19: 15–19: 10,537 males; 15–19: 9,883 females
  • 10–14: 10–14: 11,384 males; 10–14: 10,785 females
  • 5–9: 5–9: 11,555 males; 5–9: 11,046 females
  • 0–4: 0–4: 11,415 males; 0–4: 10,601 females

Sources

  • Census of Population and Housing — Australian Bureau of Statistics, 2021 (CC BY 4.0).

More for Sydney - Outer West and Blue Mountains

Cite this page

Australian Bureau of Statistics. (2021). Demographics & Identity in Sydney - Outer West and Blue Mountains [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/sa4/124/sydney-outer-west-and-blue-mountains/topic/demographics-identity