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Demographics & Identity
3812, VIC · Postcode
👥 Demographics & Identity in 3812, VIC
Who lives here — how many people, how old they are, and how communities identify.
Over half the population in postcode 3812 are married, reflecting a stable community of 2,488 people. The area is noticeably older than the state and national average, with the typical resident now aged 42.
Part of
LGA Cardinia
Capital Greater Melbourne
State Victoria
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📍 3812, VIC, Postcode
Where 3812, VIC sits — Total population
?
2,488
▲ +9.7%
1
10
100
1.0k
10k
100k
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 3812, VIC — lower than 56% of areas.
Total population compared with the state and national average
3812, VIC 2,488
Cardinia
118,194
Victoria
6,503,491
Australia
25,422,788
Population
How many people, and the typical age.
The total population grew by 9.7% since 2011, adding about 219 people. The typical resident is 42, which is noticeably older than the national figure of 38.
2,488
▲ +9.7%
Lower than 56% of postcode areas.
2.2k
2.3k
2.4k
2.5k
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2,269
2,312
2,488
2011: 2,269
2016: 2,312
2021: 2,488
The number of people who usually live in the area, counted on Census night.
42 yrs
▲ +2.4%
Younger than 52% of postcode areas.
41
42
42
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
41 yrs
42 yrs
42 yrs
2011: 41 yrs
2016: 42 yrs
2021: 42 yrs
Half the population is older than this age, and half younger.
Age profile
How the population splits across age groups.
Older adults aged 45 to 64 make up the largest group at 31.2%. While children under 15 are about the same as the national figure at 18.0%, the proportion of seniors aged 65 and over has risen to 15.4%.
15.4%
▲ +33.2%
Lower than 73% of postcode areas.
12.0%
14.0%
16.0%
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
11.6%
13.9%
15.4%
2011: 11.6%
2016: 13.9%
2021: 15.4%
Share of the population aged 65 years and over.
18.0%
▼ -8.4%
Higher than 58% of postcode areas.
17.5%
18.0%
18.5%
19.0%
19.5%
20.0%
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
19.7%
18.1%
18.0%
2011: 19.7%
2016: 18.1%
2021: 18.0%
Share of the population aged under 15 years.
In 3812, VIC, the largest group is Older adults (45–64) at 31%, followed by Young adults (25–44) (22%) and Children (0–14) (18%).
Identity & relationships
First Nations identity and marital status.
Most of the community are married at 52.8%, while 10.7% are in de facto relationships, which is lower than most areas. About 1.2% of residents identify as Aboriginal or Torres Strait Islander, a figure that has risen since 2011.
1.2%
▲ +606.8%
Lower than 68% of postcode areas.
0.0%
0.5%
1.0%
1.5%
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
0.2%
0.8%
1.2%
2011: 0.2%
2016: 0.8%
2021: 1.2%
Share of people who identify as Aboriginal and/or Torres Strait Islander.
10.7%
▲ +21.1%
Lower than 70% of postcode areas.
9.0%
10.0%
11.0%
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
8.8%
10.1%
10.7%
2011: 8.8%
2016: 10.1%
2021: 10.7%
Share of people aged 15+ who are in a de facto marriage (registered marriages excluded).
In 3812, VIC, Married is the majority at 53%; Never married is next at 33%.
Age & sex structure
Males
Females
85+
80–84
75–79
70–74
65–69
60–64
55–59
50–54
45–49
40–44
35–39
30–34
25–29
20–24
15–19
10–14
5–9
0–4
106
106
85+: 85+: 15 males; 85+: 17 females
80–84: 80–84: 15 males; 80–84: 8 females
75–79: 75–79: 21 males; 75–79: 29 females
70–74: 70–74: 70 males; 70–74: 65 females
65–69: 65–69: 77 males; 65–69: 68 females
60–64: 60–64: 99 males; 60–64: 97 females
55–59: 55–59: 91 males; 55–59: 94 females
50–54: 50–54: 103 males; 50–54: 106 females
45–49: 45–49: 99 males; 45–49: 88 females
40–44: 40–44: 69 males; 40–44: 74 females
35–39: 35–39: 84 males; 35–39: 77 females
30–34: 30–34: 66 males; 30–34: 64 females
25–29: 25–29: 58 males; 25–29: 67 females
20–24: 20–24: 75 males; 20–24: 70 females
15–19: 15–19: 92 males; 15–19: 84 females
10–14: 10–14: 90 males; 10–14: 90 females
5–9: 5–9: 77 males; 5–9: 74 females
0–4: 0–4: 54 males; 0–4: 63 females
Sources
Census of Population and Housing — Australian Bureau of Statistics, 2021 (CC BY 4.0 ).
Cite this page
Australian Bureau of Statistics. (2021). Demographics & Identity in 3812, VIC [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/poa/POA3812/3812-vic/topic/demographics-identity
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