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 Kalbarri, accounting for 19.8% (293 people). This share was similar to Northampton (S) (19.6%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 71 people and 5.4 percentage points.
Section overview
Age structure - Service age groups
Kalbarri - Total persons (Usual residence)
This table summarises service age groups for Kalbarri in 2021 for persons, with comparison against Northampton (S) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Kalbarri, with comparison markers for Northampton (S).
Babies and pre-schoolers (0 to 4)
2021 count
61
% of total
4.1%
Change from 2016
+1.5pp
61
4.1%
+1.5pp
Primary schoolers (5 to 11)
2021 count
89
% of total
6.0%
Change from 2016
-2.0pp
89
6.0%
-2.0pp
Secondary schoolers (12 to 17)
2021 count
70
% of total
4.7%
Change from 2016
-1.1pp
70
4.7%
-1.1pp
Tertiary education and independence (18 to 24)
2021 count
70
% of total
4.7%
Change from 2016
-1.4pp
70
4.7%
-1.4pp
Young workforce (25 to 34)
2021 count
119
% of total
8.1%
Change from 2016
+0.5pp
119
8.1%
+0.5pp
Parents and homebuilders (35 to 49)
2021 count
239
% of total
16.2%
Change from 2016
-2.3pp
239
16.2%
-2.3pp
Older workers and pre-retirees (50 to 59)
2021 count
232
% of total
15.7%
Change from 2016
-3.4pp
232
15.7%
-3.4pp
Empty nesters and retirees (60 to 69)
2021 count
293
% of total
19.8%
Change from 2016
+0.9pp
293
19.8%
+0.9pp
Seniors (70 to 84)
2021 count
259
% of total
17.5%
Change from 2016
+5.4pp
259
17.5%
+5.4pp
Elderly aged (85 and over)
2021 count
24
% of total
1.6%
Change from 2016
+0.5pp
24
1.6%
+0.5pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+21
+1.5pp
Primary schoolers (5 to 11)
-36
-2.0pp
Secondary schoolers (12 to 17)
-20
-1.1pp
Tertiary education and independence (18 to 24)
-25
-1.4pp
Young workforce (25 to 34)
+1
+0.5pp
Parents and homebuilders (35 to 49)
-49
-2.3pp
Older workers and pre-retirees (50 to 59)
-65
-3.4pp
Empty nesters and retirees (60 to 69)
-1
+0.9pp
Seniors (70 to 84)
+71
+5.4pp
Elderly aged (85 and over)
+7
+0.5pp
Data table
Service age groups for Kalbarri. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Northampton (S).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Northampton (S)% | Count | % | Northampton (S)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 61 | 4.1% | 4.0% | 40 | 2.6% | 4.5% | +21 | +1.5pp |
| Primary schoolers (5 to 11) | 89 | 6.0% | 7.8% | 125 | 8.0% | 7.8% | -36 | -2.0pp |
| Secondary schoolers (12 to 17) | 70 | 4.7% | 5.0% | 90 | 5.8% | 5.7% | -20 | -1.1pp |
| Tertiary education and independence (18 to 24) | 70 | 4.7% | 4.2% | 95 | 6.1% | 5.2% | -25 | -1.4pp |
| Young workforce (25 to 34) | 119 | 8.1% | 7.8% | 118 | 7.6% | 7.4% | +1 | +0.5pp |
| Parents and homebuilders (35 to 49) | 239 | 16.2% | 16.0% | 288 | 18.5% | 17.8% | -49 | -2.3pp |
| Older workers and pre-retirees (50 to 59) | 232 | 15.7% | 15.6% | 297 | 19.1% | 17.5% | -65 | -3.4pp |
| Empty nesters and retirees (60 to 69) | 293 | 19.8% | 19.6% | 294 | 18.9% | 19.1% | -1 | +0.9pp |
| Seniors (70 to 84) | 259 | 17.5% | 17.1% | 188 | 12.1% | 12.9% | +71 | +5.4pp |
| Elderly aged (85 and over) | 24 | 1.6% | 2.5% | 17 | 1.1% | 1.9% | +7 | +0.5pp |
| Total | 1,478 | 100.0% | 100.0% | 1,557 | 100.0% | 100.0% | -79 | 0.0pp |