Marino - Seaview Downs · Statistical Area 2 (SA2)

Demographics & Identity in Marino - Seaview Downs

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

A growing population of 9,703 people defines Marino - Seaview Downs, where the community has become noticeably older over the last decade. The typical resident is now 43, which is older than the national figure. This shift is most visible among seniors, who now make up over a fifth of the population.

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📍 Marino - Seaview Downs, Statistical Area 2 (SA2)

Where Marino - Seaview Downs sits — Total population

9,703 ▲ +7.2%
  • 1–1: 40 areas
  • 1–2: 0 areas
  • 2–3: 0 areas
  • 3–4: 12 areas
  • 4–6: 6 areas
  • 6–9: 9 areas
  • 9–13: 10 areas
  • 13–19: 7 areas
  • 19–27: 17 areas
  • 27–39: 6 areas
  • 39–56: 5 areas
  • 56–81: 4 areas
  • 81–116: 1 area
  • 116–168: 5 areas
  • 168–242: 3 areas
  • 242–349: 4 areas
  • 349–503: 2 areas
  • 503–725: 9 areas
  • 725–1,045: 3 areas
  • 1,045–1,506: 5 areas
  • 1,506–2,171: 31 areas
  • 2,171–3,130: 83 areas
  • 3,130–4,513: 217 areas
  • 4,513–6,507: 318 areas
  • 6,507–9,382: 402 areas
  • 9,382–13,526: 546 areas
  • 13,526–19,501: 496 areas
  • 19,501–28,116: 231 areas

All statistical area 2 (sa2) areas, 2021. The marker is Marino - Seaview Downs — higher than 51% of areas.

Total population compared with the state and national average
Marino - Seaview Downs9,703
5049, SA 10,380
South Australia 1,781,516
Australia 25,422,788

Population

How many people, and the typical age.

The area grew by 7.2% since 2011, adding about 648 people. The typical resident is 43, making the population older than most similar areas and noticeably older than the national average.

9,703 ▲ +7.2%

Higher than 51% of statistical area 2 (sa2) areas.

  • 2011: 9,055
  • 2016: 9,277
  • 2021: 9,703

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

43 yrs ▲ +2.4%

Older than 71% of statistical area 2 (sa2) areas.

  • 2011: 42 yrs
  • 2016: 42 yrs
  • 2021: 43 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 21.1% of the area, a figure well above the national average. While children under 15 represent 17.7% of the population, the group of older adults aged 45 to 64 is the largest slice of the community at 26.5%.

21.1% ▲ +16.4%

Higher than 72% of statistical area 2 (sa2) areas.

  • 2011: 18.2%
  • 2016: 19.9%
  • 2021: 21.1%

Share of the population aged 65 years and over.

17.7% ▲ +8.8%

Lower than 52% of statistical area 2 (sa2) areas.

  • 2011: 16.3%
  • 2016: 17.7%
  • 2021: 17.7%

Share of the population aged under 15 years.

Age structure

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Marino - Seaview Downs splits fairly evenly between Older adults (45–64) (27%) and Young adults (25–44) (24%), with Seniors (65+) at 21%.

Identity & relationships

First Nations identity and marital status.

About 51.1% of residents are married, while 12.1% are in de facto relationships. The Aboriginal and Torres Strait Islander population is 0.8%, which is much lower than most similar areas and a little below the state and national figures.

0.8% ▲ +77.7%

Lower than 78% of statistical area 2 (sa2) areas.

  • 2011: 0.5%
  • 2016: 0.8%
  • 2021: 0.8%

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

12.1% ▲ +22.1%

Higher than 51% of statistical area 2 (sa2) areas.

  • 2011: 9.9%
  • 2016: 10.6%
  • 2021: 12.1%

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

Marital status

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In Marino - Seaview Downs, Married is the majority at 51%; Never married is next at 32%.

Age & sex structure

  • 85+: 85+: 114 males; 85+: 108 females
  • 80–84: 80–84: 116 males; 80–84: 122 females
  • 75–79: 75–79: 215 males; 75–79: 237 females
  • 70–74: 70–74: 286 males; 70–74: 286 females
  • 65–69: 65–69: 262 males; 65–69: 310 females
  • 60–64: 60–64: 288 males; 60–64: 299 females
  • 55–59: 55–59: 316 males; 55–59: 319 females
  • 50–54: 50–54: 336 males; 50–54: 324 females
  • 45–49: 45–49: 347 males; 45–49: 341 females
  • 40–44: 40–44: 313 males; 40–44: 351 females
  • 35–39: 35–39: 299 males; 35–39: 334 females
  • 30–34: 30–34: 279 males; 30–34: 289 females
  • 25–29: 25–29: 230 males; 25–29: 203 females
  • 20–24: 20–24: 261 males; 20–24: 239 females
  • 15–19: 15–19: 300 males; 15–19: 268 females
  • 10–14: 10–14: 305 males; 10–14: 302 females
  • 5–9: 5–9: 288 males; 5–9: 297 females
  • 0–4: 0–4: 250 males; 0–4: 281 females

Sources

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

More for Marino - Seaview Downs

Cite this page

Australian Bureau of Statistics. (2021). Demographics & Identity in Marino - Seaview Downs [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/sa2/403021060/marino-seaview-downs/topic/demographics-identity