2120, NSW · Postcode

Demographics & Identity in 2120, NSW

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

More than half of the 20,988 people in postcode 2120 are married, reflecting a mature community where residents are generally older than the national average. The typical person here is 42, which is noticeably older than the typical Australian. The population has grown by 6.9% since 2011, adding about 1,363 people to the area.

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📍 2120, NSW, Postcode

Where 2120, NSW sits — Total population

20,988 ▲ +6.9%
  • 1–2: 1 area
  • 2–2: 0 areas
  • 2–4: 0 areas
  • 4–5: 2 areas
  • 5–8: 3 areas
  • 8–12: 2 areas
  • 12–19: 2 areas
  • 19–29: 12 areas
  • 29–44: 19 areas
  • 44–67: 35 areas
  • 67–102: 30 areas
  • 102–155: 70 areas
  • 155–237: 97 areas
  • 237–360: 129 areas
  • 360–549: 158 areas
  • 549–836: 168 areas
  • 836–1,273: 181 areas
  • 1,273–1,938: 179 areas
  • 1,938–2,951: 157 areas
  • 2,951–4,493: 179 areas
  • 4,493–6,842: 176 areas
  • 6,842–10,418: 210 areas
  • 10,418–15,865: 268 areas
  • 15,865–24,158: 254 areas
  • 24,158–36,786: 182 areas
  • 36,786–56,016: 93 areas
  • 56,016–85,299: 28 areas
  • 85,299–129,888: 8 areas

All postcode areas, 2021. The marker is 2120, NSW — higher than 85% of areas.

Total population compared with the state and national average
2120, NSW20,988
Hornsby 151,811
New South Wales 8,072,163
Australia 25,422,788

Population

How many people, and the typical age.

The population of 20,988 is larger than about 85% of similar areas. The typical resident is 42, which is 4 years older than the national figure and 3 years older than it was in 2011.

20,988 ▲ +6.9%

Higher than 85% of postcode areas.

  • 2011: 19,625
  • 2016: 20,208
  • 2021: 20,988

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

42 yrs ▲ +7.7%

Younger than 52% of postcode areas.

  • 2011: 39 yrs
  • 2016: 40 yrs
  • 2021: 42 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 19.1% of the population, which is higher than most areas. Meanwhile, seniors aged 65 and over account for 17.5%, a figure that has risen by 2.9 percentage points since 2011.

17.5% ▲ +19.6%

Lower than 62% of postcode areas.

  • 2011: 14.7%
  • 2016: 16.0%
  • 2021: 17.5%

Share of the population aged 65 years and over.

19.1% ▼ -5.8%

Higher than 70% of postcode areas.

  • 2011: 20.3%
  • 2016: 19.8%
  • 2021: 19.1%

Share of the population aged under 15 years.

Age structure

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In 2120, NSW, the largest group is Older adults (45–64) at 28%, followed by Young adults (25–44) (22%) and Children (0–14) (19%).

Identity & relationships

First Nations identity and marital status.

A small number of people are in de facto relationships at 5.2%, which is well below the national figure of 11.5%. Aboriginal and Torres Strait Islander people make up 0.6% of the population, a little below the New South Wales average.

5.2% ▲ +18.7%

Lower than 98% of postcode areas.

  • 2011: 4.4%
  • 2016: 4.6%
  • 2021: 5.2%

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

Marital status

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In 2120, NSW, Married is the majority at 58%; Never married is next at 29%.

Age & sex structure

  • 85+: 85+: 189 males; 85+: 253 females
  • 80–84: 80–84: 257 males; 80–84: 289 females
  • 75–79: 75–79: 324 males; 75–79: 381 females
  • 70–74: 70–74: 445 males; 70–74: 478 females
  • 65–69: 65–69: 514 males; 65–69: 574 females
  • 60–64: 60–64: 567 males; 60–64: 646 females
  • 55–59: 55–59: 714 males; 55–59: 727 females
  • 50–54: 50–54: 776 males; 50–54: 856 females
  • 45–49: 45–49: 823 males; 45–49: 848 females
  • 40–44: 40–44: 730 males; 40–44: 801 females
  • 35–39: 35–39: 661 males; 35–39: 702 females
  • 30–34: 30–34: 447 males; 30–34: 512 females
  • 25–29: 25–29: 427 males; 25–29: 375 females
  • 20–24: 20–24: 677 males; 20–24: 608 females
  • 15–19: 15–19: 727 males; 15–19: 661 females
  • 10–14: 10–14: 802 males; 10–14: 778 females
  • 5–9: 5–9: 768 males; 5–9: 672 females
  • 0–4: 0–4: 507 males; 0–4: 495 females

Sources

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

More for 2120, NSW

Cite this page

Australian Bureau of Statistics. (2021). Demographics & Identity in 2120, NSW [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/poa/POA2120/2120-nsw/topic/demographics-identity