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 Wannanup, accounting for 18.6% (769 people). This share was higher than Mandurah (C) (16.9%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 183 people and 2.9 percentage points.
Section overview
Age structure - Service age groups
Wannanup - Total persons (Usual residence)
This table summarises service age groups for Wannanup in 2021 for persons, with comparison against Mandurah (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Wannanup, with comparison markers for Mandurah (C).
Babies and pre-schoolers (0 to 4)
2021 count
172
% of total
4.2%
Change from 2016
-1.8pp
172
4.2%
-1.8pp
Primary schoolers (5 to 11)
2021 count
350
% of total
8.5%
Change from 2016
-0.4pp
350
8.5%
-0.4pp
Secondary schoolers (12 to 17)
2021 count
318
% of total
7.7%
Change from 2016
+0.5pp
318
7.7%
+0.5pp
Tertiary education and independence (18 to 24)
2021 count
278
% of total
6.7%
Change from 2016
+0.2pp
278
6.7%
+0.2pp
Young workforce (25 to 34)
2021 count
352
% of total
8.5%
Change from 2016
-1.2pp
352
8.5%
-1.2pp
Parents and homebuilders (35 to 49)
2021 count
769
% of total
18.6%
Change from 2016
-1.0pp
769
18.6%
-1.0pp
Older workers and pre-retirees (50 to 59)
2021 count
542
% of total
13.1%
Change from 2016
+0.1pp
542
13.1%
+0.1pp
Empty nesters and retirees (60 to 69)
2021 count
697
% of total
16.8%
Change from 2016
+0.1pp
697
16.8%
+0.1pp
Seniors (70 to 84)
2021 count
605
% of total
14.6%
Change from 2016
+2.9pp
605
14.6%
+2.9pp
Elderly aged (85 and over)
2021 count
48
% of total
1.2%
Change from 2016
+0.2pp
48
1.2%
+0.2pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-45
-1.8pp
Primary schoolers (5 to 11)
+29
-0.4pp
Secondary schoolers (12 to 17)
+57
+0.5pp
Tertiary education and independence (18 to 24)
+44
+0.2pp
Young workforce (25 to 34)
+2
-1.2pp
Parents and homebuilders (35 to 49)
+59
-1.0pp
Older workers and pre-retirees (50 to 59)
+71
+0.1pp
Empty nesters and retirees (60 to 69)
+91
+0.1pp
Seniors (70 to 84)
+183
+2.9pp
Elderly aged (85 and over)
+11
+0.2pp
Data table
Service age groups for Wannanup. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Mandurah (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Mandurah (C)% | Count | % | Mandurah (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 172 | 4.2% | 5.3% | 217 | 6.0% | 5.8% | -45 | -1.8pp |
| Primary schoolers (5 to 11) | 350 | 8.5% | 8.3% | 321 | 8.9% | 8.7% | +29 | -0.4pp |
| Secondary schoolers (12 to 17) | 318 | 7.7% | 7.2% | 261 | 7.2% | 7.1% | +57 | +0.5pp |
| Tertiary education and independence (18 to 24) | 278 | 6.7% | 7.0% | 234 | 6.5% | 7.8% | +44 | +0.2pp |
| Young workforce (25 to 34) | 352 | 8.5% | 10.2% | 350 | 9.7% | 10.9% | +2 | -1.2pp |
| Parents and homebuilders (35 to 49) | 769 | 18.6% | 16.9% | 710 | 19.6% | 17.9% | +59 | -1.0pp |
| Older workers and pre-retirees (50 to 59) | 542 | 13.1% | 12.8% | 471 | 13.0% | 12.8% | +71 | +0.1pp |
| Empty nesters and retirees (60 to 69) | 697 | 16.8% | 13.6% | 606 | 16.7% | 13.2% | +91 | +0.1pp |
| Seniors (70 to 84) | 605 | 14.6% | 15.6% | 422 | 11.7% | 13.2% | +183 | +2.9pp |
| Elderly aged (85 and over) | 48 | 1.2% | 3.0% | 37 | 1.0% | 2.6% | +11 | +0.2pp |
| Total | 4,142 | 100.0% | 100.0% | 3,621 | 100.0% | 100.0% | +521 | 0.0pp |