Seaham · Suburb / Locality

Demographics & Identity in Seaham

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

A growing population of 1,011 people now lives in Seaham, where families with children are more common than in most similar areas. The community is notably younger than the state and national averages for seniors, with a strong presence of older adults and children.

Open map →
📍 Seaham, Suburb / Locality

Where Seaham sits — Total population

1,011 ▼ -1.4%
  • 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 Seaham — higher than 73% of areas.

Total population compared with the state and national average
Seaham1,011
2324, NSW 25,443
New South Wales 8,072,163
Australia 25,422,788

Population

How many people, and the typical age.

The typical resident is 41 years old, which is a little older than the New South Wales figure of 39. Seaham is larger than about 74% of similar areas.

1,011 ▼ -1.4%

Higher than 73% of suburb / locality areas.

  • 2011: 1,025
  • 2016: 1,007
  • 2021: 1,011

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

41 yrs ▲ +7.9%

Younger than 67% of suburb / locality areas.

  • 2011: 38 yrs
  • 2016: 40 yrs
  • 2021: 41 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 19.9% of the population, which is a little above the national figure of 18.2%. This helps explain why the area has fewer seniors, with those aged 65 and over at 13.8%, well below the 17.2% seen across Australia.

13.8% ▲ +77.6%

Lower than 72% of suburb / locality areas.

  • 2011: 7.8%
  • 2016: 10.8%
  • 2021: 13.8%

Share of the population aged 65 years and over.

19.9% ▼ -22.1%

Higher than 69% of suburb / locality areas.

  • 2011: 25.5%
  • 2016: 21.5%
  • 2021: 19.9%

Share of the population aged under 15 years.

Age structure

View on map →

In Seaham, the largest group is Older adults (45–64) at 33%, followed by Children (0–14) (20%) and Young adults (25–44) (18%).

Identity & relationships

First Nations identity and marital status.

Aboriginal and Torres Strait Islander people make up 4.4% of the population, which is higher than most similar areas. Most residents are married at 56.7%, while those in de facto relationships sit at 10.2%, a little below the national figure.

4.4% ▲ +135.0%

Higher than 70% of suburb / locality areas.

  • 2011: 1.9%
  • 2016: 2.6%
  • 2021: 4.4%

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

10.2% ▲ +56.7%

Lower than 66% of suburb / locality areas.

  • 2011: 6.5%
  • 2016: 7.2%
  • 2021: 10.2%

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

Marital status

View on map →

In Seaham, Married is the majority at 57%; Never married is next at 31%.

Age & sex structure

  • 85+: 85+: 0 males; 85+: 6 females
  • 80–84: 80–84: 7 males; 80–84: 0 females
  • 75–79: 75–79: 16 males; 75–79: 9 females
  • 70–74: 70–74: 23 males; 70–74: 31 females
  • 65–69: 65–69: 28 males; 65–69: 25 females
  • 60–64: 60–64: 35 males; 60–64: 37 females
  • 55–59: 55–59: 54 males; 55–59: 47 females
  • 50–54: 50–54: 41 males; 50–54: 45 females
  • 45–49: 45–49: 34 males; 45–49: 32 females
  • 40–44: 40–44: 29 males; 40–44: 19 females
  • 35–39: 35–39: 23 males; 35–39: 29 females
  • 30–34: 30–34: 25 males; 30–34: 21 females
  • 25–29: 25–29: 18 males; 25–29: 16 females
  • 20–24: 20–24: 35 males; 20–24: 39 females
  • 15–19: 15–19: 45 males; 15–19: 43 females
  • 10–14: 10–14: 35 males; 10–14: 40 females
  • 5–9: 5–9: 46 males; 5–9: 36 females
  • 0–4: 0–4: 25 males; 0–4: 27 females

Sources

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

More for Seaham

Cite this page

Australian Bureau of Statistics. (2021). Demographics & Identity in Seaham [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/sal/SAL13525/seaham/topic/demographics-identity