3123, VIC · Postcode

Demographics & Identity in 3123, VIC

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

A typical resident in postcode 3123 is just 36 years old, making the area much younger than most other similar places. The population has grown by 13% since 2011 to reach 14,834 people. This growth comes alongside a distinct age profile where young adults make up the largest group.

Open map →
📍 3123, VIC, Postcode

Where 3123, VIC sits — Total population

14,834 ▲ +13.2%
  • 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 3123, VIC — higher than 76% of areas.

Total population compared with the state and national average
3123, VIC14,834
Boroondara 167,900
Victoria 6,503,491
Australia 25,422,788

Population

How many people, and the typical age.

The population reached 14,834 people in 2021, which is larger than about 76% of similar areas. While the typical age is now 36, this is 3 years older than it was in 2011.

14,834 ▲ +13.2%

Higher than 76% of postcode areas.

  • 2011: 13,102
  • 2016: 14,321
  • 2021: 14,834

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

36 yrs ▲ +9.1%

Younger than 86% of postcode areas.

  • 2011: 33 yrs
  • 2016: 34 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 14.8% of the population, which is well below the national figure of 18.2%. Seniors aged 65 and over are also much lower than most areas at 15.1%, though this group has grown by 3.1 percentage points since 2011.

15.1% ▲ +26.2%

Lower than 74% of postcode areas.

  • 2011: 12.0%
  • 2016: 13.2%
  • 2021: 15.1%

Share of the population aged 65 years and over.

14.8% ▼ -4.4%

Lower than 74% of postcode areas.

  • 2011: 15.5%
  • 2016: 16.1%
  • 2021: 14.8%

Share of the population aged under 15 years.

Age structure

View on map →

In 3123, VIC, the largest group is Young adults (25–44) at 34%, followed by Older adults (45–64) (23%) and Seniors (65+) (15%).

Identity & relationships

First Nations identity and marital status.

People in de facto relationships make up 13.8% of the area, which is a little above the Victorian figure of 11.2%. Those who have never married represent the largest marital group at 45.1%, while the Aboriginal and Torres Strait Islander population is much lower than most areas at 0.3%.

13.8% ▲ +42.9%

Higher than 67% of postcode areas.

  • 2011: 9.7%
  • 2016: 11.6%
  • 2021: 13.8%

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

Marital status

View on map →

3123, VIC splits fairly evenly between Never married (45%) and Married (43%), with Divorced at 7%.

Age & sex structure

  • 85+: 85+: 111 males; 85+: 211 females
  • 80–84: 80–84: 130 males; 80–84: 188 females
  • 75–79: 75–79: 197 males; 75–79: 233 females
  • 70–74: 70–74: 251 males; 70–74: 312 females
  • 65–69: 65–69: 273 males; 65–69: 347 females
  • 60–64: 60–64: 330 males; 60–64: 397 females
  • 55–59: 55–59: 382 males; 55–59: 409 females
  • 50–54: 50–54: 429 males; 50–54: 464 females
  • 45–49: 45–49: 439 males; 45–49: 552 females
  • 40–44: 40–44: 482 males; 40–44: 500 females
  • 35–39: 35–39: 540 males; 35–39: 597 females
  • 30–34: 30–34: 648 males; 30–34: 698 females
  • 25–29: 25–29: 758 males; 25–29: 819 females
  • 20–24: 20–24: 545 males; 20–24: 636 females
  • 15–19: 15–19: 380 males; 15–19: 389 females
  • 10–14: 10–14: 406 males; 10–14: 395 females
  • 5–9: 5–9: 414 males; 5–9: 371 females
  • 0–4: 0–4: 318 males; 0–4: 307 females

Sources

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

More for 3123, VIC

Cite this page

Australian Bureau of Statistics. (2021). Demographics & Identity in 3123, VIC [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/poa/POA3123/3123-vic/topic/demographics-identity