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, Seniors (70 to 84) was the most common category among residents in Franklin Harbour (DC), accounting for 18.3% (237 people). This share was higher than Regional SA (14.7%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 74 people and 5.7 percentage points.
Section overview
Age structure - Service age groups
Franklin Harbour (DC) - Total persons (Usual residence)
This table summarises service age groups for Franklin Harbour (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 Franklin Harbour (DC), with comparison markers for Regional SA.
Babies and pre-schoolers (0 to 4)
2021 count
46
% of total
3.6%
Change from 2016
-2.1pp
46
3.6%
-2.1pp
Primary schoolers (5 to 11)
2021 count
112
% of total
8.7%
Change from 2016
+0.9pp
112
8.7%
+0.9pp
Secondary schoolers (12 to 17)
2021 count
64
% of total
4.9%
Change from 2016
+0.2pp
64
4.9%
+0.2pp
Tertiary education and independence (18 to 24)
2021 count
52
% of total
4.0%
Change from 2016
-1.2pp
52
4.0%
-1.2pp
Young workforce (25 to 34)
2021 count
118
% of total
9.1%
Change from 2016
+1.7pp
118
9.1%
+1.7pp
Parents and homebuilders (35 to 49)
2021 count
183
% of total
14.2%
Change from 2016
-3.1pp
183
14.2%
-3.1pp
Older workers and pre-retirees (50 to 59)
2021 count
204
% of total
15.8%
Change from 2016
+1.5pp
204
15.8%
+1.5pp
Empty nesters and retirees (60 to 69)
2021 count
218
% of total
16.9%
Change from 2016
-2.7pp
218
16.9%
-2.7pp
Seniors (70 to 84)
2021 count
237
% of total
18.3%
Change from 2016
+5.7pp
237
18.3%
+5.7pp
Elderly aged (85 and over)
2021 count
35
% of total
2.7%
Change from 2016
-1.2pp
35
2.7%
-1.2pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-28
-2.1pp
Primary schoolers (5 to 11)
+11
+0.9pp
Secondary schoolers (12 to 17)
+3
+0.2pp
Tertiary education and independence (18 to 24)
-16
-1.2pp
Young workforce (25 to 34)
+22
+1.7pp
Parents and homebuilders (35 to 49)
-42
-3.1pp
Older workers and pre-retirees (50 to 59)
+19
+1.5pp
Empty nesters and retirees (60 to 69)
-36
-2.7pp
Seniors (70 to 84)
+74
+5.7pp
Elderly aged (85 and over)
-16
-1.2pp
Data table
Service age groups for Franklin Harbour (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) | 46 | 3.6% | 4.9% | 74 | 5.7% | 5.5% | -28 | -2.1pp |
| Primary schoolers (5 to 11) | 112 | 8.7% | 8.1% | 101 | 7.8% | 8.6% | +11 | +0.9pp |
| Secondary schoolers (12 to 17) | 64 | 4.9% | 7.0% | 61 | 4.7% | 7.2% | +3 | +0.2pp |
| Tertiary education and independence (18 to 24) | 52 | 4.0% | 6.5% | 68 | 5.2% | 6.8% | -16 | -1.2pp |
| Young workforce (25 to 34) | 118 | 9.1% | 10.5% | 96 | 7.4% | 10.4% | +22 | +1.7pp |
| Parents and homebuilders (35 to 49) | 183 | 14.2% | 16.4% | 225 | 17.3% | 17.8% | -42 | -3.1pp |
| Older workers and pre-retirees (50 to 59) | 204 | 15.8% | 13.9% | 185 | 14.3% | 14.6% | +19 | +1.5pp |
| Empty nesters and retirees (60 to 69) | 218 | 16.9% | 15.1% | 254 | 19.6% | 14.4% | -36 | -2.7pp |
| Seniors (70 to 84) | 237 | 18.3% | 14.7% | 163 | 12.6% | 12.1% | +74 | +5.7pp |
| Elderly aged (85 and over) | 35 | 2.7% | 2.8% | 51 | 3.9% | 2.7% | -16 | -1.2pp |
| Total | 1,293 | 100.0% | 100.0% | 1,298 | 100.0% | 100.0% | -5 | 0.0pp |