Mortdale · Suburb / Locality

Demographics & Identity in Mortdale

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

Nearly half of the 10,745 people in Mortdale are married, making it one of the largest populations at this level. The area is generally young for its type, with a typical resident aged 38. This creates a community where young and middle-aged adults make up the bulk of the population.

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📍 Mortdale, Suburb / Locality

Where Mortdale sits — Total population

10,745 ▲ +10.8%
  • 1–1: 689 areas
  • 1–2: 0 areas
  • 2–3: 119 areas
  • 3–5: 108 areas
  • 5–7: 243 areas
  • 7–11: 241 areas
  • 11–16: 514 areas
  • 16–24: 579 areas
  • 24–36: 898 areas
  • 36–53: 1059 areas
  • 53–79: 1168 areas
  • 79–117: 1203 areas
  • 117–174: 1171 areas
  • 174–258: 1010 areas
  • 258–384: 856 areas
  • 384–571: 670 areas
  • 571–850: 616 areas
  • 850–1,263: 567 areas
  • 1,263–1,879: 520 areas
  • 1,879–2,794: 590 areas
  • 2,794–4,154: 679 areas
  • 4,154–6,177: 585 areas
  • 6,177–9,186: 528 areas
  • 9,186–13,659: 405 areas
  • 13,659–20,311: 195 areas
  • 20,311–30,202: 96 areas
  • 30,202–44,910: 33 areas
  • 44,910–66,781: 10 areas

All suburb / locality areas, 2021. The marker is Mortdale — higher than 87% of areas.

Total population compared with the state and national average
Mortdale10,745
2223, NSW 21,403
New South Wales 8,072,163
Australia 25,422,788

Population

How many people, and the typical age.

The typical resident is 38, which is much lower than most similar areas and a little younger than the New South Wales figure. This aligns with the national typical age of 38.

10,745 ▲ +10.8%

Higher than 87% of suburb / locality areas.

  • 2011: 9,702
  • 2016: 10,419
  • 2021: 10,745

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

38 yrs ▲ +5.6%

Younger than 77% of suburb / locality areas.

  • 2011: 36 yrs
  • 2016: 37 yrs
  • 2021: 38 yrs

Half the population is older than this age, and half younger.

Age profile

How the population splits across age groups.

Young adults aged 25 to 44 are the largest group at 30.8%. Seniors aged 65 and over make up 15.6% of the population, which is a little below both the state and national figures.

15.6% ▲ +22.3%

Lower than 64% of suburb / locality areas.

  • 2011: 12.8%
  • 2016: 13.3%
  • 2021: 15.6%

Share of the population aged 65 years and over.

17.0% ▼ -2.2%

Lower than 51% of suburb / locality areas.

  • 2011: 17.4%
  • 2016: 17.3%
  • 2021: 17.0%

Share of the population aged under 15 years.

Age structure

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In Mortdale, the largest group is Young adults (25–44) at 31%, followed by Older adults (45–64) (25%) and Children (0–14) (17%).

Identity & relationships

First Nations identity and marital status.

De facto relationships are much less common here than in most areas, at just 8.1%. This is well below the Australian figure of 11.5%. Aboriginal and Torres Strait Islander people make up 1.0% of the population, which is a little below the state and national figures.

1.0% ▲ +34.8%

Lower than 60% of suburb / locality areas.

  • 2011: 0.7%
  • 2016: 0.6%
  • 2021: 1.0%

Share of people who identify as Aboriginal and/or Torres Strait Islander.

8.1% ▲ +14.7%

Lower than 78% of suburb / locality areas.

  • 2011: 7.1%
  • 2016: 8.2%
  • 2021: 8.1%

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

Marital status

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In Mortdale, the largest group is Married at 50%, followed by Never married (35%) and Divorced (8%).

Age & sex structure

  • 85+: 85+: 86 males; 85+: 197 females
  • 80–84: 80–84: 83 males; 80–84: 106 females
  • 75–79: 75–79: 143 males; 75–79: 130 females
  • 70–74: 70–74: 198 males; 70–74: 217 females
  • 65–69: 65–69: 236 males; 65–69: 284 females
  • 60–64: 60–64: 290 males; 60–64: 330 females
  • 55–59: 55–59: 311 males; 55–59: 359 females
  • 50–54: 50–54: 346 males; 50–54: 325 females
  • 45–49: 45–49: 375 males; 45–49: 364 females
  • 40–44: 40–44: 393 males; 40–44: 433 females
  • 35–39: 35–39: 420 males; 35–39: 455 females
  • 30–34: 30–34: 389 males; 30–34: 421 females
  • 25–29: 25–29: 401 males; 25–29: 397 females
  • 20–24: 20–24: 347 males; 20–24: 352 females
  • 15–19: 15–19: 276 males; 15–19: 254 females
  • 10–14: 10–14: 275 males; 10–14: 292 females
  • 5–9: 5–9: 320 males; 5–9: 316 females
  • 0–4: 0–4: 323 males; 0–4: 303 females

Sources

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

More for Mortdale

Cite this page

Australian Bureau of Statistics. (2021). Demographics & Identity in Mortdale [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/sal/SAL12739/mortdale/topic/demographics-identity