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 Dennington (part), accounting for 20.9% (417 people). This share was higher than Warrnambool (C) (18.1%). Since 2016, the biggest change was in Primary schoolers (5 to 11), which decreased by 63 people and 3.8 percentage points.
Section overview
Age structure - Service age groups
Dennington (part) - Total persons (Usual residence)
This table summarises service age groups for Dennington (part) in 2021 for persons, with comparison against Warrnambool (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Dennington (part), with comparison markers for Warrnambool (C).
Babies and pre-schoolers (0 to 4)
2021 count
151
% of total
7.6%
Change from 2016
+0.3pp
151
7.6%
+0.3pp
Primary schoolers (5 to 11)
2021 count
184
% of total
9.2%
Change from 2016
-3.8pp
184
9.2%
-3.8pp
Secondary schoolers (12 to 17)
2021 count
195
% of total
9.8%
Change from 2016
+1.0pp
195
9.8%
+1.0pp
Tertiary education and independence (18 to 24)
2021 count
189
% of total
9.5%
Change from 2016
+0.4pp
189
9.5%
+0.4pp
Young workforce (25 to 34)
2021 count
295
% of total
14.8%
Change from 2016
0.0pp
295
14.8%
0.0pp
Parents and homebuilders (35 to 49)
2021 count
417
% of total
20.9%
Change from 2016
0.0pp
417
20.9%
0.0pp
Older workers and pre-retirees (50 to 59)
2021 count
233
% of total
11.7%
Change from 2016
+1.9pp
233
11.7%
+1.9pp
Empty nesters and retirees (60 to 69)
2021 count
162
% of total
8.1%
Change from 2016
-0.3pp
162
8.1%
-0.3pp
Seniors (70 to 84)
2021 count
156
% of total
7.8%
Change from 2016
+2.7pp
156
7.8%
+2.7pp
Elderly aged (85 and over)
2021 count
17
% of total
0.9%
Change from 2016
-0.1pp
17
0.9%
-0.1pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+12
+0.3pp
Primary schoolers (5 to 11)
-63
-3.8pp
Secondary schoolers (12 to 17)
+28
+1.0pp
Tertiary education and independence (18 to 24)
+15
+0.4pp
Young workforce (25 to 34)
+13
0.0pp
Parents and homebuilders (35 to 49)
+18
0.0pp
Older workers and pre-retirees (50 to 59)
+47
+1.9pp
Empty nesters and retirees (60 to 69)
+1
-0.3pp
Seniors (70 to 84)
+58
+2.7pp
Elderly aged (85 and over)
-2
-0.1pp
Data table
Service age groups for Dennington (part). Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Warrnambool (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Warrnambool (C)% | Count | % | Warrnambool (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 151 | 7.6% | 5.2% | 139 | 7.3% | 5.8% | +12 | +0.3pp |
| Primary schoolers (5 to 11) | 184 | 9.2% | 8.4% | 247 | 13.0% | 8.6% | -63 | -3.8pp |
| Secondary schoolers (12 to 17) | 195 | 9.8% | 7.5% | 167 | 8.8% | 7.7% | +28 | +1.0pp |
| Tertiary education and independence (18 to 24) | 189 | 9.5% | 7.6% | 174 | 9.1% | 9.3% | +15 | +0.4pp |
| Young workforce (25 to 34) | 295 | 14.8% | 12.8% | 282 | 14.8% | 12.1% | +13 | 0.0pp |
| Parents and homebuilders (35 to 49) | 417 | 20.9% | 18.1% | 399 | 20.9% | 18.4% | +18 | 0.0pp |
| Older workers and pre-retirees (50 to 59) | 233 | 11.7% | 12.9% | 186 | 9.8% | 13.1% | +47 | +1.9pp |
| Empty nesters and retirees (60 to 69) | 162 | 8.1% | 12.7% | 161 | 8.4% | 11.9% | +1 | -0.3pp |
| Seniors (70 to 84) | 156 | 7.8% | 12.1% | 98 | 5.1% | 10.3% | +58 | +2.7pp |
| Elderly aged (85 and over) | 17 | 0.9% | 3.0% | 19 | 1.0% | 2.9% | -2 | -0.1pp |
| Total | 1,994 | 100.0% | 100.0% | 1,907 | 100.0% | 100.0% | +87 | 0.0pp |