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 Ampilatwatja, accounting for 18% (79 people). This share was lower than Barkly (R) (18.6%). Since 2016, the biggest change was in Young workforce (25 to 34), which increased by 20 people and 4 percentage points.
Section overview
Age structure - Service age groups
Ampilatwatja - Total persons (Usual residence)
This table summarises service age groups for Ampilatwatja in 2021 for persons, with comparison against Barkly (R) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Ampilatwatja, with comparison markers for Barkly (R).
Babies and pre-schoolers (0 to 4)
2021 count
39
% of total
8.9%
Change from 2016
-1.6pp
39
8.9%
-1.6pp
Primary schoolers (5 to 11)
2021 count
69
% of total
15.7%
Change from 2016
-3.2pp
69
15.7%
-3.2pp
Secondary schoolers (12 to 17)
2021 count
47
% of total
10.7%
Change from 2016
-0.3pp
47
10.7%
-0.3pp
Tertiary education and independence (18 to 24)
2021 count
63
% of total
14.4%
Change from 2016
-2.6pp
63
14.4%
-2.6pp
Young workforce (25 to 34)
2021 count
72
% of total
16.4%
Change from 2016
+4.0pp
72
16.4%
+4.0pp
Parents and homebuilders (35 to 49)
2021 count
79
% of total
18.0%
Change from 2016
+3.6pp
79
18.0%
+3.6pp
Older workers and pre-retirees (50 to 59)
2021 count
33
% of total
7.5%
Change from 2016
+2.0pp
33
7.5%
+2.0pp
Empty nesters and retirees (60 to 69)
2021 count
20
% of total
4.6%
Change from 2016
+3.2pp
20
4.6%
+3.2pp
Seniors (70 to 84)
2021 count
8
% of total
1.8%
Change from 2016
-0.6pp
8
1.8%
-0.6pp
Elderly aged (85 and over)
2021 count
0
% of total
0.0%
Change from 2016
0.0pp
0
0.0%
0.0pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-5
-1.6pp
Primary schoolers (5 to 11)
-10
-3.2pp
Secondary schoolers (12 to 17)
+1
-0.3pp
Tertiary education and independence (18 to 24)
-8
-2.6pp
Young workforce (25 to 34)
+20
+4.0pp
Parents and homebuilders (35 to 49)
+19
+3.6pp
Older workers and pre-retirees (50 to 59)
+10
+2.0pp
Empty nesters and retirees (60 to 69)
+14
+3.2pp
Seniors (70 to 84)
-2
-0.6pp
Elderly aged (85 and over)
0
0.0pp
Data table
Service age groups for Ampilatwatja. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Barkly (R).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Barkly (R)% | Count | % | Barkly (R)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 39 | 8.9% | 8.9% | 44 | 10.5% | 9.3% | -5 | -1.6pp |
| Primary schoolers (5 to 11) | 69 | 15.7% | 12.0% | 79 | 18.9% | 12.6% | -10 | -3.2pp |
| Secondary schoolers (12 to 17) | 47 | 10.7% | 8.3% | 46 | 11.0% | 8.6% | +1 | -0.3pp |
| Tertiary education and independence (18 to 24) | 63 | 14.4% | 10.8% | 71 | 17.0% | 12.7% | -8 | -2.6pp |
| Young workforce (25 to 34) | 72 | 16.4% | 18.1% | 52 | 12.4% | 17.4% | +20 | +4.0pp |
| Parents and homebuilders (35 to 49) | 79 | 18.0% | 18.6% | 60 | 14.4% | 18.9% | +19 | +3.6pp |
| Older workers and pre-retirees (50 to 59) | 33 | 7.5% | 11.0% | 23 | 5.5% | 10.6% | +10 | +2.0pp |
| Empty nesters and retirees (60 to 69) | 20 | 4.6% | 8.3% | 6 | 1.4% | 6.8% | +14 | +3.2pp |
| Seniors (70 to 84) | 8 | 1.8% | 3.5% | 10 | 2.4% | 3.3% | -2 | -0.6pp |
| Elderly aged (85 and over) | 0 | 0.0% | 0.2% | 0 | 0.0% | 0.3% | 0 | 0.0pp |
| Total | 439 | 100.0% | 100.0% | 418 | 100.0% | 100.0% | +21 | 0.0pp |