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, Seniors (70 to 84) was the most common category among residents in Coodanup, accounting for 18.7% (816 people). This share was higher than Mandurah (C) (15.6%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 311 people and 7.7 percentage points.
Section overview
Age structure - Service age groups
Coodanup - Total persons (Usual residence)
This table summarises service age groups for Coodanup in 2021 for persons, with comparison against Mandurah (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Coodanup, with comparison markers for Mandurah (C).
Babies and pre-schoolers (0 to 4)
2021 count
213
% of total
4.9%
Change from 2016
+0.4pp
213
4.9%
+0.4pp
Primary schoolers (5 to 11)
2021 count
351
% of total
8.0%
Change from 2016
+0.4pp
351
8.0%
+0.4pp
Secondary schoolers (12 to 17)
2021 count
335
% of total
7.7%
Change from 2016
+0.1pp
335
7.7%
+0.1pp
Tertiary education and independence (18 to 24)
2021 count
302
% of total
6.9%
Change from 2016
-2.1pp
302
6.9%
-2.1pp
Young workforce (25 to 34)
2021 count
406
% of total
9.3%
Change from 2016
+0.1pp
406
9.3%
+0.1pp
Parents and homebuilders (35 to 49)
2021 count
625
% of total
14.3%
Change from 2016
-5.8pp
625
14.3%
-5.8pp
Older workers and pre-retirees (50 to 59)
2021 count
504
% of total
11.5%
Change from 2016
-4.0pp
504
11.5%
-4.0pp
Empty nesters and retirees (60 to 69)
2021 count
618
% of total
14.2%
Change from 2016
+0.1pp
618
14.2%
+0.1pp
Seniors (70 to 84)
2021 count
816
% of total
18.7%
Change from 2016
+7.7pp
816
18.7%
+7.7pp
Elderly aged (85 and over)
2021 count
166
% of total
3.8%
Change from 2016
+2.5pp
166
3.8%
+2.5pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+8
+0.4pp
Primary schoolers (5 to 11)
0
+0.4pp
Secondary schoolers (12 to 17)
-13
+0.1pp
Tertiary education and independence (18 to 24)
-113
-2.1pp
Young workforce (25 to 34)
-17
+0.1pp
Parents and homebuilders (35 to 49)
-299
-5.8pp
Older workers and pre-retirees (50 to 59)
-210
-4.0pp
Empty nesters and retirees (60 to 69)
-28
+0.1pp
Seniors (70 to 84)
+311
+7.7pp
Elderly aged (85 and over)
+105
+2.5pp
Data table
Service age groups for Coodanup. 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) | 213 | 4.9% | 5.3% | 205 | 4.5% | 5.8% | +8 | +0.4pp |
| Primary schoolers (5 to 11) | 351 | 8.0% | 8.3% | 351 | 7.6% | 8.7% | 0 | +0.4pp |
| Secondary schoolers (12 to 17) | 335 | 7.7% | 7.2% | 348 | 7.6% | 7.1% | -13 | +0.1pp |
| Tertiary education and independence (18 to 24) | 302 | 6.9% | 7.0% | 415 | 9.0% | 7.8% | -113 | -2.1pp |
| Young workforce (25 to 34) | 406 | 9.3% | 10.2% | 423 | 9.2% | 10.9% | -17 | +0.1pp |
| Parents and homebuilders (35 to 49) | 625 | 14.3% | 16.9% | 924 | 20.1% | 17.9% | -299 | -5.8pp |
| Older workers and pre-retirees (50 to 59) | 504 | 11.5% | 12.8% | 714 | 15.5% | 12.8% | -210 | -4.0pp |
| Empty nesters and retirees (60 to 69) | 618 | 14.2% | 13.6% | 646 | 14.1% | 13.2% | -28 | +0.1pp |
| Seniors (70 to 84) | 816 | 18.7% | 15.6% | 505 | 11.0% | 13.2% | +311 | +7.7pp |
| Elderly aged (85 and over) | 166 | 3.8% | 3.0% | 61 | 1.3% | 2.6% | +105 | +2.5pp |
| Total | 4,366 | 100.0% | 100.0% | 4,597 | 100.0% | 100.0% | -231 | 0.0pp |