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, Empty nesters and retirees (60 to 69) was the most common category among residents in Coomalie (S), accounting for 19.5% (249 people). This share was higher than Regional NT (8%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 76 people and 6.2 percentage points.
Section overview
Age structure - Service age groups
Coomalie (S) - Total persons (Usual residence)
This table summarises service age groups for Coomalie (S) in 2021 for persons, with comparison against Regional NT and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Coomalie (S), with comparison markers for Regional NT.
Babies and pre-schoolers (0 to 4)
2021 count
66
% of total
5.2%
Change from 2016
-0.9pp
66
5.2%
-0.9pp
Primary schoolers (5 to 11)
2021 count
117
% of total
9.2%
Change from 2016
-1.5pp
117
9.2%
-1.5pp
Secondary schoolers (12 to 17)
2021 count
72
% of total
5.6%
Change from 2016
+1.1pp
72
5.6%
+1.1pp
Tertiary education and independence (18 to 24)
2021 count
54
% of total
4.2%
Change from 2016
-1.6pp
54
4.2%
-1.6pp
Young workforce (25 to 34)
2021 count
127
% of total
10.0%
Change from 2016
+0.2pp
127
10.0%
+0.2pp
Parents and homebuilders (35 to 49)
2021 count
206
% of total
16.1%
Change from 2016
-0.5pp
206
16.1%
-0.5pp
Older workers and pre-retirees (50 to 59)
2021 count
224
% of total
17.6%
Change from 2016
-3.2pp
224
17.6%
-3.2pp
Empty nesters and retirees (60 to 69)
2021 count
249
% of total
19.5%
Change from 2016
+2.2pp
249
19.5%
+2.2pp
Seniors (70 to 84)
2021 count
172
% of total
13.5%
Change from 2016
+6.2pp
172
13.5%
+6.2pp
Elderly aged (85 and over)
2021 count
6
% of total
0.5%
Change from 2016
-0.6pp
6
0.5%
-0.6pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-14
-0.9pp
Primary schoolers (5 to 11)
-24
-1.5pp
Secondary schoolers (12 to 17)
+13
+1.1pp
Tertiary education and independence (18 to 24)
-23
-1.6pp
Young workforce (25 to 34)
-2
+0.2pp
Parents and homebuilders (35 to 49)
-13
-0.5pp
Older workers and pre-retirees (50 to 59)
-50
-3.2pp
Empty nesters and retirees (60 to 69)
+21
+2.2pp
Seniors (70 to 84)
+76
+6.2pp
Elderly aged (85 and over)
-9
-0.6pp
Data table
Service age groups for Coomalie (S). Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Regional NT.
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Regional NT% | Count | % | Regional NT% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 66 | 5.2% | 7.3% | 80 | 6.1% | 8.3% | -14 | -0.9pp |
| Primary schoolers (5 to 11) | 117 | 9.2% | 11.0% | 141 | 10.7% | 11.5% | -24 | -1.5pp |
| Secondary schoolers (12 to 17) | 72 | 5.6% | 8.5% | 59 | 4.5% | 9.0% | +13 | +1.1pp |
| Tertiary education and independence (18 to 24) | 54 | 4.2% | 10.4% | 77 | 5.8% | 10.5% | -23 | -1.6pp |
| Young workforce (25 to 34) | 127 | 10.0% | 18.3% | 129 | 9.8% | 17.5% | -2 | +0.2pp |
| Parents and homebuilders (35 to 49) | 206 | 16.1% | 20.8% | 219 | 16.6% | 20.8% | -13 | -0.5pp |
| Older workers and pre-retirees (50 to 59) | 224 | 17.6% | 11.7% | 274 | 20.8% | 11.9% | -50 | -3.2pp |
| Empty nesters and retirees (60 to 69) | 249 | 19.5% | 8.0% | 228 | 17.3% | 7.2% | +21 | +2.2pp |
| Seniors (70 to 84) | 172 | 13.5% | 3.8% | 96 | 7.3% | 3.0% | +76 | +6.2pp |
| Elderly aged (85 and over) | 6 | 0.5% | 0.4% | 15 | 1.1% | 0.3% | -9 | -0.6pp |
| Total | 1,276 | 100.0% | 100.0% | 1,319 | 100.0% | 100.0% | -43 | 0.0pp |