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There were 156 people over the age of 85 living in Seaford in 2011, with largest age group being 25 to 29 year olds.

The Age Structure of Seaford provides key insights into the level of demand for age based services and facilities such as child care. It is also an indicator of Seaford's residential role and function and how it is likely to change in the future.

Five year age groups present a classic age profile of the population. Each age group covers exactly five years, which enables direct comparison between each group.

To get a more complete picture Seaford's Age Structure should be viewed in conjunction with Household Types and Dwelling Types.

Derived from the Census question:

'What is the person's date of birth (or age last birthday)?'

Total population

Age structure - Five year age groups
Seaford - Total persons (Usual residence)20112006Change
Five year age groups (years)Number%City of Onkaparinga %Number%City of Onkaparinga %2006 to 2011
0 to 42836.86.62276.26.1+56
5 to 92375.76.32567.06.8-20
10 to 142245.46.72597.07.3-35
15 to 192225.36.82677.37.3-45
20 to 242135.16.22637.26.5-49
25 to 292886.96.42406.55.8+48
30 to 342676.46.22336.36.5+34
35 to 392546.16.62366.47.0+18
40 to 442726.57.12095.77.4+63
45 to 492315.57.12536.97.7-22
50 to 542475.97.02887.97.3-42
55 to 592736.56.62607.17.1+13
60 to 642616.36.51714.75.0+90
65 to 692044.94.61323.63.6+72
70 to 741894.53.21293.52.8+60
75 to 791764.22.41243.42.5+52
80 to 841704.12.0832.31.8+87
85 and over1563.71.8411.11.4+115

Source: Australian Bureau of Statistics, Census of Population and Housing 2006 and 2011. Compiled and presented by .id , the population experts.

Age structure - five year age groups, 2011
Age structure - five year age groups, 2011 85 and over, City of Onkaparinga: 1.8% 80 to 84, City of Onkaparinga: 2.0% 75 to 79, City of Onkaparinga: 2.4% 70 to 74, City of Onkaparinga: 3.2% 65 to 69, City of Onkaparinga: 4.6% 60 to 64, City of Onkaparinga: 6.5% 55 to 59, City of Onkaparinga: 6.6% 50 to 54, City of Onkaparinga: 7.0% 45 to 49, City of Onkaparinga: 7.1% 40 to 44, City of Onkaparinga: 7.1% 35 to 39, City of Onkaparinga: 6.6% 30 to 34, City of Onkaparinga: 6.2% 25 to 29, City of Onkaparinga: 6.4% 20 to 24, City of Onkaparinga: 6.2% 15 to 19, City of Onkaparinga: 6.8% 10 to 14, City of Onkaparinga: 6.7% 5 to 9, City of Onkaparinga: 6.3% 0 to 4, City of Onkaparinga: 6.6% 85 and over, Seaford: 3.7% 80 to 84, Seaford: 4.1% 75 to 79, Seaford: 4.2% 70 to 74, Seaford: 4.5% 65 to 69, Seaford: 4.9% 60 to 64, Seaford: 6.3% 55 to 59, Seaford: 6.5% 50 to 54, Seaford: 5.9% 45 to 49, Seaford: 5.5% 40 to 44, Seaford: 6.5% 35 to 39, Seaford: 6.1% 30 to 34, Seaford: 6.4% 25 to 29, Seaford: 6.9% 20 to 24, Seaford: 5.1% 15 to 19, Seaford: 5.3% 10 to 14, Seaford: 5.4% 5 to 9, Seaford: 5.7% 0 to 4, Seaford: 6.8%
Source: Australian Bureau of Statistics, Census of Population and Housing, 2011 (Usual residence data)
Compiled and presented in profile.id by .id, the population experts.
Change in age structure - five year age groups, 2006 to 2011
Change in age structure - five year age groups, 2006 to 2011 85 and over, Seaford: +115 80 to 84, Seaford: +87 75 to 79, Seaford: +52 70 to 74, Seaford: +60 65 to 69, Seaford: +72 60 to 64, Seaford: +90 55 to 59, Seaford: +13 50 to 54, Seaford: -42 45 to 49, Seaford: -22 40 to 44, Seaford: +63 35 to 39, Seaford: +18 30 to 34, Seaford: +34 25 to 29, Seaford: +48 20 to 24, Seaford: -49 15 to 19, Seaford: -45 10 to 14, Seaford: -35 5 to 9, Seaford: -20 0 to 4, Seaford: +56
Source: Australian Bureau of Statistics, Census of Population and Housing, 2006 and 2011 (Usual residence data)
Compiled and presented in profile.id by .id, the population experts.

Dominant groups

Analysis of the five year age groups of Seaford in 2011 compared to the City of Onkaparinga shows that there was a lower proportion of people in the younger age groups (under 15) and a higher proportion of people in the older age groups (65+).

Overall, 17.8% of the population was aged between 0 and 15, and 21.5% were aged 65 years and over, compared with 19.5% and 13.8% respectively for the City of Onkaparinga.

The major differences between the age structure of Seaford and the City of Onkaparinga were:

  • A larger percentage of persons aged 80 to 84 (4.1% compared to 2.0%)
  • A larger percentage of persons aged 85 and over (3.7% compared to 1.8%)
  • A larger percentage of persons aged 75 to 79 (4.2% compared to 2.4%)
  • A smaller percentage of persons aged 45 to 49 (5.5% compared to 7.1%)

Emerging groups

From 2006 to 2011, Seaford's population increased by 497 people (13.5%). This represents an average annual population change of 2.57% per year over the period.

The largest changes in age structure in this area between 2006 and 2011 were in the age groups:

  • 85 and over (+115 persons)
  • 60 to 64 (+90 persons)
  • 80 to 84 (+87 persons)
  • 65 to 69 (+72 persons)