3912, VIC · Postcode

Demographics & Identity in 3912, VIC

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

A high rate of de facto relationships defines the social landscape of postcode 3912, where 14.9% of people live in such partnerships. This is well above the national figure. The area has grown steadily to 15,633 residents, with a diverse age mix that has seen a significant increase in the number of seniors over the last decade.

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📍 3912, VIC, Postcode

Where 3912, VIC sits — Total population

15,633 ▲ +7.0%
  • 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 3912, VIC — higher than 77% of areas.

Total population compared with the state and national average
3912, VIC15,633
Mornington Peninsula 168,948
Victoria 6,503,491
Australia 25,422,788

Population

How many people, and the typical age.

The population grew by 7% since 2011 to reach 15,633 people. The typical resident is now 40, which is a little older than the national figure and 2 years older than it was in 2011.

15,633 ▲ +7.0%

Higher than 77% of postcode areas.

  • 2011: 14,604
  • 2016: 15,157
  • 2021: 15,633

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

40 yrs ▲ +5.3%

Younger than 64% of postcode areas.

  • 2011: 38 yrs
  • 2016: 40 yrs
  • 2021: 40 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 now make up 18.3% of the population, a figure that rose by 6.4 points since 2011. Children under 15 account for 18.5%, which is higher than most similar areas.

18.3% ▲ +53.2%

Lower than 58% of postcode areas.

  • 2011: 11.9%
  • 2016: 15.1%
  • 2021: 18.3%

Share of the population aged 65 years and over.

18.5% ▼ -10.4%

Higher than 63% of postcode areas.

  • 2011: 20.6%
  • 2016: 18.7%
  • 2021: 18.5%

Share of the population aged under 15 years.

Age structure

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3912, VIC splits fairly evenly between Older adults (45–64) (27%) and Young adults (25–44) (25%), with Children (0–14) at 18%.

Identity & relationships

First Nations identity and marital status.

De facto relationships are much more common here than in most areas, rising 4.6 points since 2011. Aboriginal and Torres Strait Islander people make up 1.1% of the population, which is about the same as the Victorian average.

14.9% ▲ +44.8%

Higher than 75% of postcode areas.

  • 2011: 10.3%
  • 2016: 12.2%
  • 2021: 14.9%

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

Marital status

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In 3912, VIC, the largest group is Married at 47%, followed by Never married (35%) and Divorced (10%).

Age & sex structure

  • 85+: 85+: 153 males; 85+: 206 females
  • 80–84: 80–84: 139 males; 80–84: 194 females
  • 75–79: 75–79: 240 males; 75–79: 284 females
  • 70–74: 70–74: 347 males; 70–74: 375 females
  • 65–69: 65–69: 442 males; 65–69: 470 females
  • 60–64: 60–64: 489 males; 60–64: 512 females
  • 55–59: 55–59: 537 males; 55–59: 609 females
  • 50–54: 50–54: 494 males; 50–54: 589 females
  • 45–49: 45–49: 432 males; 45–49: 491 females
  • 40–44: 40–44: 446 males; 40–44: 437 females
  • 35–39: 35–39: 495 males; 35–39: 512 females
  • 30–34: 30–34: 504 males; 30–34: 573 females
  • 25–29: 25–29: 459 males; 25–29: 496 females
  • 20–24: 20–24: 476 males; 20–24: 406 females
  • 15–19: 15–19: 489 males; 15–19: 447 females
  • 10–14: 10–14: 503 males; 10–14: 460 females
  • 5–9: 5–9: 519 males; 5–9: 414 females
  • 0–4: 0–4: 472 males; 0–4: 520 females

Sources

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

More for 3912, VIC

Cite this page

Australian Bureau of Statistics. (2021). Demographics & Identity in 3912, VIC [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/poa/POA3912/3912-vic/topic/demographics-identity