Blacktown · Council (LGA)

Demographics & Identity in Blacktown

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

A noticeably younger population marks Blacktown, where the typical resident is 34 — five years younger than the New South Wales average. This growth is significant, with the population climbing 32% since 2011 to reach 396,776 people. It is now among the largest areas of its kind in the region.

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📍 Blacktown, Council (LGA)

Where Blacktown sits — Total population

396,776 ▲ +31.8%
  • 1–2: 3 areas
  • 2–3: 0 areas
  • 3–4: 0 areas
  • 4–7: 0 areas
  • 7–12: 2 areas
  • 12–20: 1 area
  • 20–33: 0 areas
  • 33–55: 1 area
  • 55–91: 0 areas
  • 91–150: 5 areas
  • 150–248: 3 areas
  • 248–409: 13 areas
  • 409–675: 22 areas
  • 675–1,115: 38 areas
  • 1,115–1,840: 37 areas
  • 1,840–3,038: 30 areas
  • 3,038–5,014: 40 areas
  • 5,014–8,276: 49 areas
  • 8,276–13,661: 54 areas
  • 13,661–22,550: 57 areas
  • 22,550–37,223: 43 areas
  • 37,223–61,442: 49 areas
  • 61,442–101,420: 39 areas
  • 101,420–167,409: 37 areas
  • 167,409–276,336: 31 areas
  • 276,336–456,137: 8 areas
  • 456,137–752,926: 2 areas
  • 752,926–1,242,825: 1 area

All council (lga) areas, 2021. The marker is Blacktown — higher than 89% of areas.

Total population compared with the state and national average
Blacktown396,776
Greater Sydney 5,231,147
New South Wales 8,072,163
Australia 25,422,788

Population

How many people, and the typical age.

The typical resident is 34, which is much lower than most areas and noticeably younger than the national figure of 38. This age has risen slightly since 2011, when it was 32.

396,776 ▲ +31.8%

Higher than 89% of council (lga) areas.

  • 2011: 301,099
  • 2016: 336,962
  • 2021: 396,776

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

34 yrs ▲ +6.3%

Younger than 88% of council (lga) areas.

  • 2011: 32 yrs
  • 2016: 33 yrs
  • 2021: 34 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 22.7% of the population, which is well above the national figure of 18.2%. This helps explain why the area is so young, as seniors aged 65 and over are much lower than most areas at just 11.0%.

11.0% ▲ +22.6%

Lower than 86% of council (lga) areas.

  • 2011: 9.0%
  • 2016: 10.3%
  • 2021: 11.0%

Share of the population aged 65 years and over.

22.7% ▼ -4.3%

Higher than 88% of council (lga) areas.

  • 2011: 23.7%
  • 2016: 22.8%
  • 2021: 22.7%

Share of the population aged under 15 years.

Age structure

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In Blacktown, the largest group is Young adults (25–44) at 32%, followed by Children (0–14) (23%) and Older adults (45–64) (22%).

Identity & relationships

First Nations identity and marital status.

About 3.0% of residents are Aboriginal and Torres Strait Islander, which is about the same as the New South Wales figure. Those in de facto relationships make up 6.8% of the population, a figure that is well below the national average.

6.8% ▲ +11.7%

Lower than 97% of council (lga) areas.

  • 2011: 6.1%
  • 2016: 6.6%
  • 2021: 6.8%

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

Marital status

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In Blacktown, Married is the majority at 53%; Never married is next at 34%.

Age & sex structure

  • 85+: 85+: 1,563 males; 85+: 2,748 females
  • 80–84: 80–84: 2,182 males; 80–84: 2,633 females
  • 75–79: 75–79: 3,606 males; 75–79: 4,015 females
  • 70–74: 70–74: 5,736 males; 70–74: 6,498 females
  • 65–69: 65–69: 7,004 males; 65–69: 7,778 females
  • 60–64: 60–64: 8,568 males; 60–64: 9,143 females
  • 55–59: 55–59: 10,006 males; 55–59: 10,152 females
  • 50–54: 50–54: 10,950 males; 50–54: 11,211 females
  • 45–49: 45–49: 12,956 males; 45–49: 12,449 females
  • 40–44: 40–44: 15,961 males; 40–44: 14,991 females
  • 35–39: 35–39: 17,873 males; 35–39: 18,565 females
  • 30–34: 30–34: 14,743 males; 30–34: 16,701 females
  • 25–29: 25–29: 14,012 males; 25–29: 13,797 females
  • 20–24: 20–24: 13,849 males; 20–24: 12,575 females
  • 15–19: 15–19: 12,642 males; 15–19: 11,728 females
  • 10–14: 10–14: 14,863 males; 10–14: 13,967 females
  • 5–9: 5–9: 15,983 males; 5–9: 15,407 females
  • 0–4: 0–4: 15,368 males; 0–4: 14,536 females

Sources

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

More for Blacktown

Cite this page

Australian Bureau of Statistics. (2021). Demographics & Identity in Blacktown [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/lga/LGA10750/blacktown/topic/demographics-identity