3781, VIC · Postcode

Demographics & Identity in 3781, VIC

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

More than one in five residents in postcode 3781 are children, making it a notably young area. The population has grown to 4,638 people, and the typical resident is 36 years old, which is a little younger than the national figure.

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📍 3781, VIC, Postcode

Where 3781, VIC sits — Total population

4,638 ▲ +5.4%
  • 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 3781, VIC — higher than 53% of areas.

Total population compared with the state and national average
3781, VIC4,638
Cardinia 118,194
Victoria 6,503,491
Australia 25,422,788

Population

How many people, and the typical age.

The population grew by 5.4% since 2011, adding about 238 people. The typical age of 36 years has barely changed over the last decade.

4,638 ▲ +5.4%

Higher than 53% of postcode areas.

  • 2011: 4,400
  • 2016: 4,477
  • 2021: 4,638

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

36 yrs → 0.0%

Younger than 86% of postcode areas.

  • 2011: 36 yrs
  • 2016: 36 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 make up 22.1% of the population, which is well above the national figure of 18.2%. This helps explain why the area is much younger than most, while those aged 65 and over are well below the state average at 11.1%.

11.1% ▲ +79.3%

Lower than 88% of postcode areas.

  • 2011: 6.2%
  • 2016: 8.4%
  • 2021: 11.1%

Share of the population aged 65 years and over.

22.1% ▼ -4.5%

Higher than 88% of postcode areas.

  • 2011: 23.2%
  • 2016: 22.6%
  • 2021: 22.1%

Share of the population aged under 15 years.

Age structure

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3781, VIC splits fairly evenly between Young adults (25–44) (28%) and Older adults (45–64) (28%), with Children (0–14) at 22%.

Identity & relationships

First Nations identity and marital status.

De facto relationships are much more common here than in most areas, at 17.1%, which is well above the national figure of 11.5%. People of Aboriginal and Torres Strait Islander descent make up 1.1% of the population, about the same as the state average.

17.1% ▲ +25.4%

Higher than 87% of postcode areas.

  • 2011: 13.6%
  • 2016: 15.3%
  • 2021: 17.1%

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

Marital status

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In 3781, VIC, the largest group is Married at 48%, followed by Never married (38%) and Divorced (9%).

Age & sex structure

  • 85+: 85+: 6 males; 85+: 23 females
  • 80–84: 80–84: 26 males; 80–84: 15 females
  • 75–79: 75–79: 33 males; 75–79: 36 females
  • 70–74: 70–74: 69 males; 70–74: 76 females
  • 65–69: 65–69: 116 males; 65–69: 99 females
  • 60–64: 60–64: 138 males; 60–64: 153 females
  • 55–59: 55–59: 164 males; 55–59: 154 females
  • 50–54: 50–54: 149 males; 50–54: 173 females
  • 45–49: 45–49: 155 males; 45–49: 194 females
  • 40–44: 40–44: 161 males; 40–44: 162 females
  • 35–39: 35–39: 180 males; 35–39: 167 females
  • 30–34: 30–34: 169 males; 30–34: 180 females
  • 25–29: 25–29: 139 males; 25–29: 129 females
  • 20–24: 20–24: 127 males; 20–24: 99 females
  • 15–19: 15–19: 167 males; 15–19: 141 females
  • 10–14: 10–14: 169 males; 10–14: 164 females
  • 5–9: 5–9: 191 males; 5–9: 164 females
  • 0–4: 0–4: 172 males; 0–4: 174 females

Sources

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

More for 3781, VIC

Cite this page

Australian Bureau of Statistics. (2021). Demographics & Identity in 3781, VIC [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/poa/POA3781/3781-vic/topic/demographics-identity