Population
Service age groups
About this topic
Service age groups divide the population into broad life-stage bands such as children, young adults, working-age adults, and older people. The groupings are designed to reflect typical demand for age-based services and facilities rather than exact five-year cohorts.
This view is useful for planning childcare, schools, recreation, aged services, and other community infrastructure. It works best alongside five year age groups, household type, and dwelling data, which add more detail about who is living in an area and how needs may change over time.
Interpretation notes
- This is a derived grouping rather than a direct Census question, so the age bands are planning-oriented summaries built from standard age data.
- Percentages relate to the total population; use five year age groups when exact cohort detail matters.
Related topics
Key insight
In 2021, Parents and homebuilders (35 to 49) was the most common category among residents in Port Adelaide Enfield (C), accounting for 21% (27,826 people). This share was higher than Greater Adelaide (19.6%). Since 2016, the biggest change was in Parents and homebuilders (35 to 49), which increased by 2,656 people and 0.2 percentage points.
Section overview
Age structure - Service age groups
Port Adelaide Enfield (C) - Total persons (Usual residence)
This table summarises service age groups for Port Adelaide Enfield (C) in 2021 for persons, with comparison against Greater Adelaide and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Port Adelaide Enfield (C), with comparison markers for Greater Adelaide.
Babies and pre-schoolers (0 to 4)
2021 count
8,014
% of total
6.1%
Change from 2016
-0.2pp
8,014
6.1%
-0.2pp
Primary schoolers (5 to 11)
2021 count
10,249
% of total
7.7%
Change from 2016
+0.1pp
10,249
7.7%
+0.1pp
Secondary schoolers (12 to 17)
2021 count
7,968
% of total
6.0%
Change from 2016
-0.1pp
7,968
6.0%
-0.1pp
Tertiary education and independence (18 to 24)
2021 count
11,554
% of total
8.7%
Change from 2016
-0.4pp
11,554
8.7%
-0.4pp
Young workforce (25 to 34)
2021 count
22,404
% of total
16.9%
Change from 2016
+0.3pp
22,404
16.9%
+0.3pp
Parents and homebuilders (35 to 49)
2021 count
27,826
% of total
21.0%
Change from 2016
+0.2pp
27,826
21.0%
+0.2pp
Older workers and pre-retirees (50 to 59)
2021 count
15,920
% of total
12.0%
Change from 2016
-0.7pp
15,920
12.0%
-0.7pp
Empty nesters and retirees (60 to 69)
2021 count
13,867
% of total
10.5%
Change from 2016
+0.4pp
13,867
10.5%
+0.4pp
Seniors (70 to 84)
2021 count
11,616
% of total
8.8%
Change from 2016
+0.6pp
11,616
8.8%
+0.6pp
Elderly aged (85 and over)
2021 count
2,983
% of total
2.3%
Change from 2016
-0.3pp
2,983
2.3%
-0.3pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+377
-0.2pp
Primary schoolers (5 to 11)
+1,074
+0.1pp
Secondary schoolers (12 to 17)
+589
-0.1pp
Tertiary education and independence (18 to 24)
+474
-0.4pp
Young workforce (25 to 34)
+2,260
+0.3pp
Parents and homebuilders (35 to 49)
+2,656
+0.2pp
Older workers and pre-retirees (50 to 59)
+518
-0.7pp
Empty nesters and retirees (60 to 69)
+1,680
+0.4pp
Seniors (70 to 84)
+1,707
+0.6pp
Elderly aged (85 and over)
-172
-0.3pp
Data table
Service age groups for Port Adelaide Enfield (C). Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Greater Adelaide.
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Greater Adelaide% | Count | % | Greater Adelaide% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 8,014 | 6.1% | 5.4% | 7,637 | 6.3% | 5.9% | +377 | -0.2pp |
| Primary schoolers (5 to 11) | 10,249 | 7.7% | 8.2% | 9,175 | 7.6% | 8.2% | +1,074 | +0.1pp |
| Secondary schoolers (12 to 17) | 7,968 | 6.0% | 6.9% | 7,379 | 6.1% | 6.9% | +589 | -0.1pp |
| Tertiary education and independence (18 to 24) | 11,554 | 8.7% | 8.8% | 11,080 | 9.1% | 9.5% | +474 | -0.4pp |
| Young workforce (25 to 34) | 22,404 | 16.9% | 14.0% | 20,144 | 16.6% | 13.8% | +2,260 | +0.3pp |
| Parents and homebuilders (35 to 49) | 27,826 | 21.0% | 19.6% | 25,170 | 20.8% | 19.7% | +2,656 | +0.2pp |
| Older workers and pre-retirees (50 to 59) | 15,920 | 12.0% | 12.6% | 15,402 | 12.7% | 13.1% | +518 | -0.7pp |
| Empty nesters and retirees (60 to 69) | 13,867 | 10.5% | 11.2% | 12,187 | 10.1% | 11.1% | +1,680 | +0.4pp |
| Seniors (70 to 84) | 11,616 | 8.8% | 10.7% | 9,909 | 8.2% | 9.3% | +1,707 | +0.6pp |
| Elderly aged (85 and over) | 2,983 | 2.3% | 2.6% | 3,155 | 2.6% | 2.6% | -172 | -0.3pp |
| Total | 132,400 | 100.0% | 100.0% | 121,230 | 100.0% | 100.0% | +11,170 | 0.0pp |