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 Koonya, accounting for 27.5% (38 people). This share was higher than Tasman (M) (23.5%). Since 2016, the biggest change was in Older workers and pre-retirees (50 to 59), which decreased by 21 people and 16 percentage points.
Section overview
Age structure - Service age groups
Koonya - Total persons (Usual residence)
This table summarises service age groups for Koonya in 2021 for persons, with comparison against Tasman (M) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Koonya, with comparison markers for Tasman (M).
Babies and pre-schoolers (0 to 4)
2021 count
0
% of total
0.0%
Change from 2016
-2.2pp
0
0.0%
-2.2pp
Primary schoolers (5 to 11)
2021 count
11
% of total
8.0%
Change from 2016
+4.3pp
11
8.0%
+4.3pp
Secondary schoolers (12 to 17)
2021 count
11
% of total
8.0%
Change from 2016
+5.8pp
11
8.0%
+5.8pp
Tertiary education and independence (18 to 24)
2021 count
4
% of total
2.9%
Change from 2016
+0.7pp
4
2.9%
+0.7pp
Young workforce (25 to 34)
2021 count
0
% of total
0.0%
Change from 2016
-4.5pp
0
0.0%
-4.5pp
Parents and homebuilders (35 to 49)
2021 count
16
% of total
11.6%
Change from 2016
-0.3pp
16
11.6%
-0.3pp
Older workers and pre-retirees (50 to 59)
2021 count
14
% of total
10.1%
Change from 2016
-16.0pp
14
10.1%
-16.0pp
Empty nesters and retirees (60 to 69)
2021 count
38
% of total
27.5%
Change from 2016
+2.9pp
38
27.5%
+2.9pp
Seniors (70 to 84)
2021 count
17
% of total
12.3%
Change from 2016
-3.4pp
17
12.3%
-3.4pp
Elderly aged (85 and over)
2021 count
4
% of total
2.9%
Change from 2016
-0.8pp
4
2.9%
-0.8pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-3
-2.2pp
Primary schoolers (5 to 11)
+6
+4.3pp
Secondary schoolers (12 to 17)
+8
+5.8pp
Tertiary education and independence (18 to 24)
+1
+0.7pp
Young workforce (25 to 34)
-6
-4.5pp
Parents and homebuilders (35 to 49)
0
-0.3pp
Older workers and pre-retirees (50 to 59)
-21
-16.0pp
Empty nesters and retirees (60 to 69)
+5
+2.9pp
Seniors (70 to 84)
-4
-3.4pp
Elderly aged (85 and over)
-1
-0.8pp
Data table
Service age groups for Koonya. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Tasman (M).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Tasman (M)% | Count | % | Tasman (M)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 0 | 0.0% | 2.6% | 3 | 2.2% | 3.6% | -3 | -2.2pp |
| Primary schoolers (5 to 11) | 11 | 8.0% | 4.5% | 5 | 3.7% | 7.1% | +6 | +4.3pp |
| Secondary schoolers (12 to 17) | 11 | 8.0% | 5.8% | 3 | 2.2% | 5.4% | +8 | +5.8pp |
| Tertiary education and independence (18 to 24) | 4 | 2.9% | 4.0% | 3 | 2.2% | 3.5% | +1 | +0.7pp |
| Young workforce (25 to 34) | 0 | 0.0% | 6.7% | 6 | 4.5% | 6.2% | -6 | -4.5pp |
| Parents and homebuilders (35 to 49) | 16 | 11.6% | 15.0% | 16 | 11.9% | 15.4% | 0 | -0.3pp |
| Older workers and pre-retirees (50 to 59) | 14 | 10.1% | 16.5% | 35 | 26.1% | 19.2% | -21 | -16.0pp |
| Empty nesters and retirees (60 to 69) | 38 | 27.5% | 23.5% | 33 | 24.6% | 21.4% | +5 | +2.9pp |
| Seniors (70 to 84) | 17 | 12.3% | 18.8% | 21 | 15.7% | 16.2% | -4 | -3.4pp |
| Elderly aged (85 and over) | 4 | 2.9% | 2.4% | 5 | 3.7% | 2.6% | -1 | -0.8pp |
| Total | 138 | 100.0% | 100.0% | 134 | 100.0% | 100.0% | +4 | 0.0pp |