Mornington Peninsula · Sub-region (SA3)

Demographics & Identity in Mornington Peninsula

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

A typical resident in the Mornington Peninsula is 48, making the area far older than the national figure. This ageing trend is a major part of the local story, with the population growing by 17% to reach 168,948 people since 2011.

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📍 Mornington Peninsula, Sub-region (SA3)

Where Mornington Peninsula sits — Total population

168,948 ▲ +16.8%
  • 1–2: 3 areas
  • 2–2: 0 areas
  • 2–4: 0 areas
  • 4–6: 0 areas
  • 6–9: 2 areas
  • 9–15: 2 areas
  • 15–23: 1 area
  • 23–37: 0 areas
  • 37–57: 1 area
  • 57–90: 0 areas
  • 90–141: 1 area
  • 141–221: 1 area
  • 221–347: 1 area
  • 347–545: 2 areas
  • 545–854: 3 areas
  • 854–1,340: 0 areas
  • 1,340–2,101: 3 areas
  • 2,101–3,296: 1 area
  • 3,296–5,169: 2 areas
  • 5,169–8,107: 3 areas
  • 8,107–12,714: 7 areas
  • 12,714–19,940: 16 areas
  • 19,940–31,273: 30 areas
  • 31,273–49,048: 61 areas
  • 49,048–76,924: 90 areas
  • 76,924–120,643: 70 areas
  • 120,643–189,211: 46 areas
  • 189,211–296,748: 12 areas

All sub-region (sa3) areas, 2021. The marker is Mornington Peninsula — higher than 89% of areas.

Total population compared with the state and national average
Mornington Peninsula168,948
Greater Melbourne 4,917,750
Victoria 6,503,491
Australia 25,422,788

Population

How many people, and the typical age.

The typical age of residents is 48, which is among the highest for similar areas and 10 years older than the national figure. This age has risen 5 years since 2011.

168,948 ▲ +16.8%

Higher than 89% of sub-region (sa3) areas.

  • 2011: 144,608
  • 2016: 154,999
  • 2021: 168,948

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

48 yrs ▲ +11.6%

Older than 88% of sub-region (sa3) areas.

  • 2011: 43 yrs
  • 2016: 46 yrs
  • 2021: 48 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 make up 27.2% of the population, a figure well above the national average. This helps explain why children under 15 make up a smaller share at 16.3%, which is a little below the national figure.

27.2% ▲ +26.4%

Higher than 93% of sub-region (sa3) areas.

  • 2011: 21.5%
  • 2016: 24.6%
  • 2021: 27.2%

Share of the population aged 65 years and over.

16.3% ▼ -11.3%

Lower than 72% of sub-region (sa3) areas.

  • 2011: 18.4%
  • 2016: 17.3%
  • 2021: 16.3%

Share of the population aged under 15 years.

Age structure

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Mornington Peninsula splits fairly evenly between Seniors (65+) (27%) and Older adults (45–64) (27%), with Young adults (25–44) at 19%.

Identity & relationships

First Nations identity and marital status.

Aboriginal and Torres Strait Islander people make up 1.0% of the population, which is much lower than most areas. Nearly half of the residents are married, while those in de facto relationships account for 11.7%.

11.7% ▲ +24.5%

Lower than 61% of sub-region (sa3) areas.

  • 2011: 9.4%
  • 2016: 10.5%
  • 2021: 11.7%

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

Marital status

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In Mornington Peninsula, the largest group is Married at 50%, followed by Never married (30%) and Divorced (11%).

Age & sex structure

  • 85+: 85+: 2,564 males; 85+: 3,465 females
  • 80–84: 80–84: 2,924 males; 80–84: 3,348 females
  • 75–79: 75–79: 4,458 males; 75–79: 5,104 females
  • 70–74: 70–74: 5,689 males; 70–74: 6,463 females
  • 65–69: 65–69: 5,621 males; 65–69: 6,348 females
  • 60–64: 60–64: 5,508 males; 60–64: 6,360 females
  • 55–59: 55–59: 5,453 males; 55–59: 5,885 females
  • 50–54: 50–54: 5,471 males; 50–54: 6,276 females
  • 45–49: 45–49: 5,199 males; 45–49: 5,663 females
  • 40–44: 40–44: 4,325 males; 40–44: 4,803 females
  • 35–39: 35–39: 4,074 males; 35–39: 4,636 females
  • 30–34: 30–34: 3,761 males; 30–34: 4,088 females
  • 25–29: 25–29: 3,411 males; 25–29: 3,304 females
  • 20–24: 20–24: 4,046 males; 20–24: 3,595 females
  • 15–19: 15–19: 5,022 males; 15–19: 4,592 females
  • 10–14: 10–14: 5,253 males; 10–14: 5,059 females
  • 5–9: 5–9: 4,791 males; 5–9: 4,491 females
  • 0–4: 0–4: 4,130 males; 0–4: 3,794 females

Sources

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

More for Mornington Peninsula

Cite this page

Australian Bureau of Statistics. (2021). Demographics & Identity in Mornington Peninsula [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/sa3/21402/mornington-peninsula/topic/demographics-identity