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 Grant (DC), accounting for 20.1% (1,734 people). This share was higher than Regional SA (16.4%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 288 people and 3 percentage points.
Section overview
Age structure - Service age groups
Grant (DC) - Total persons (Usual residence)
This table summarises service age groups for Grant (DC) in 2021 for persons, with comparison against Regional SA and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Grant (DC), with comparison markers for Regional SA.
Babies and pre-schoolers (0 to 4)
2021 count
381
% of total
4.4%
Change from 2016
-0.7pp
381
4.4%
-0.7pp
Primary schoolers (5 to 11)
2021 count
704
% of total
8.2%
Change from 2016
-1.4pp
704
8.2%
-1.4pp
Secondary schoolers (12 to 17)
2021 count
701
% of total
8.1%
Change from 2016
0.0pp
701
8.1%
0.0pp
Tertiary education and independence (18 to 24)
2021 count
582
% of total
6.7%
Change from 2016
+0.5pp
582
6.7%
+0.5pp
Young workforce (25 to 34)
2021 count
786
% of total
9.1%
Change from 2016
-0.3pp
786
9.1%
-0.3pp
Parents and homebuilders (35 to 49)
2021 count
1,734
% of total
20.1%
Change from 2016
-1.8pp
1,734
20.1%
-1.8pp
Older workers and pre-retirees (50 to 59)
2021 count
1,411
% of total
16.3%
Change from 2016
+0.1pp
1,411
16.3%
+0.1pp
Empty nesters and retirees (60 to 69)
2021 count
1,246
% of total
14.4%
Change from 2016
+0.4pp
1,246
14.4%
+0.4pp
Seniors (70 to 84)
2021 count
956
% of total
11.1%
Change from 2016
+3.0pp
956
11.1%
+3.0pp
Elderly aged (85 and over)
2021 count
134
% of total
1.6%
Change from 2016
+0.2pp
134
1.6%
+0.2pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-39
-0.7pp
Primary schoolers (5 to 11)
-80
-1.4pp
Secondary schoolers (12 to 17)
+40
0.0pp
Tertiary education and independence (18 to 24)
+72
+0.5pp
Young workforce (25 to 34)
+14
-0.3pp
Parents and homebuilders (35 to 49)
-66
-1.8pp
Older workers and pre-retirees (50 to 59)
+84
+0.1pp
Empty nesters and retirees (60 to 69)
+99
+0.4pp
Seniors (70 to 84)
+288
+3.0pp
Elderly aged (85 and over)
+21
+0.2pp
Data table
Service age groups for Grant (DC). Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Regional SA.
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Regional SA% | Count | % | Regional SA% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 381 | 4.4% | 4.9% | 420 | 5.1% | 5.5% | -39 | -0.7pp |
| Primary schoolers (5 to 11) | 704 | 8.2% | 8.1% | 784 | 9.6% | 8.6% | -80 | -1.4pp |
| Secondary schoolers (12 to 17) | 701 | 8.1% | 7.0% | 661 | 8.1% | 7.2% | +40 | 0.0pp |
| Tertiary education and independence (18 to 24) | 582 | 6.7% | 6.5% | 510 | 6.2% | 6.8% | +72 | +0.5pp |
| Young workforce (25 to 34) | 786 | 9.1% | 10.5% | 772 | 9.4% | 10.4% | +14 | -0.3pp |
| Parents and homebuilders (35 to 49) | 1,734 | 20.1% | 16.4% | 1,800 | 21.9% | 17.8% | -66 | -1.8pp |
| Older workers and pre-retirees (50 to 59) | 1,411 | 16.3% | 13.9% | 1,327 | 16.2% | 14.6% | +84 | +0.1pp |
| Empty nesters and retirees (60 to 69) | 1,246 | 14.4% | 15.1% | 1,147 | 14.0% | 14.4% | +99 | +0.4pp |
| Seniors (70 to 84) | 956 | 11.1% | 14.7% | 668 | 8.1% | 12.1% | +288 | +3.0pp |
| Elderly aged (85 and over) | 134 | 1.6% | 2.8% | 113 | 1.4% | 2.7% | +21 | +0.2pp |
| Total | 8,636 | 100.0% | 100.0% | 8,203 | 100.0% | 100.0% | +433 | 0.0pp |