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, Young workforce (25 to 34) was the most common category among residents in Eyre, accounting for 29.6% (330 people). This share was higher than Playford (C) (15.9%). Since 2016, the biggest change was in Seniors (70 to 84), which decreased by 321 people and 12.8 percentage points.
Section overview
Age structure - Service age groups
Eyre - Total persons (Usual residence)
This table summarises service age groups for Eyre in 2021 for persons, with comparison against Playford (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Eyre, with comparison markers for Playford (C).
Babies and pre-schoolers (0 to 4)
2021 count
143
% of total
12.8%
Change from 2016
+8.2pp
143
12.8%
+8.2pp
Primary schoolers (5 to 11)
2021 count
107
% of total
9.6%
Change from 2016
+3.2pp
107
9.6%
+3.2pp
Secondary schoolers (12 to 17)
2021 count
57
% of total
5.1%
Change from 2016
-0.3pp
57
5.1%
-0.3pp
Tertiary education and independence (18 to 24)
2021 count
108
% of total
9.7%
Change from 2016
+1.8pp
108
9.7%
+1.8pp
Young workforce (25 to 34)
2021 count
330
% of total
29.6%
Change from 2016
+16.5pp
330
29.6%
+16.5pp
Parents and homebuilders (35 to 49)
2021 count
191
% of total
17.2%
Change from 2016
-0.7pp
191
17.2%
-0.7pp
Older workers and pre-retirees (50 to 59)
2021 count
86
% of total
7.7%
Change from 2016
-3.1pp
86
7.7%
-3.1pp
Empty nesters and retirees (60 to 69)
2021 count
61
% of total
5.5%
Change from 2016
-6.7pp
61
5.5%
-6.7pp
Seniors (70 to 84)
2021 count
23
% of total
2.1%
Change from 2016
-12.8pp
23
2.1%
-12.8pp
Elderly aged (85 and over)
2021 count
3
% of total
0.3%
Change from 2016
-6.0pp
3
0.3%
-6.0pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+37
+8.2pp
Primary schoolers (5 to 11)
-42
+3.2pp
Secondary schoolers (12 to 17)
-67
-0.3pp
Tertiary education and independence (18 to 24)
-74
+1.8pp
Young workforce (25 to 34)
+27
+16.5pp
Parents and homebuilders (35 to 49)
-222
-0.7pp
Older workers and pre-retirees (50 to 59)
-164
-3.1pp
Empty nesters and retirees (60 to 69)
-221
-6.7pp
Seniors (70 to 84)
-321
-12.8pp
Elderly aged (85 and over)
-142
-6.0pp
Data table
Service age groups for Eyre. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Playford (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Playford (C)% | Count | % | Playford (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 143 | 12.8% | 7.5% | 106 | 4.6% | 8.6% | +37 | +8.2pp |
| Primary schoolers (5 to 11) | 107 | 9.6% | 11.0% | 149 | 6.4% | 10.6% | -42 | +3.2pp |
| Secondary schoolers (12 to 17) | 57 | 5.1% | 8.1% | 124 | 5.4% | 7.8% | -67 | -0.3pp |
| Tertiary education and independence (18 to 24) | 108 | 9.7% | 9.5% | 182 | 7.9% | 10.5% | -74 | +1.8pp |
| Young workforce (25 to 34) | 330 | 29.6% | 15.9% | 303 | 13.1% | 15.3% | +27 | +16.5pp |
| Parents and homebuilders (35 to 49) | 191 | 17.2% | 18.5% | 413 | 17.9% | 18.2% | -222 | -0.7pp |
| Older workers and pre-retirees (50 to 59) | 86 | 7.7% | 11.6% | 250 | 10.8% | 12.3% | -164 | -3.1pp |
| Empty nesters and retirees (60 to 69) | 61 | 5.5% | 9.1% | 282 | 12.2% | 8.4% | -221 | -6.7pp |
| Seniors (70 to 84) | 23 | 2.1% | 7.2% | 344 | 14.9% | 6.9% | -321 | -12.8pp |
| Elderly aged (85 and over) | 3 | 0.3% | 1.6% | 145 | 6.3% | 1.5% | -142 | -6.0pp |
| Total | 1,113 | 100.0% | 100.0% | 2,311 | 100.0% | 100.0% | -1,198 | 0.0pp |