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 Narrogin (S), accounting for 16.8% (803 people). This share was lower than Regional WA (19.9%). Since 2016, the biggest change was in Primary schoolers (5 to 11), which decreased by 102 people and 1.3 percentage points.
Section overview
Age structure - Service age groups
Narrogin (S) - Total persons (Usual residence)
This table summarises service age groups for Narrogin (S) in 2021 for persons, with comparison against Regional WA and change since 2016.
Chart view
Age structure - Service age groups snapshot
2021 distribution by category for Narrogin (S), with comparison markers for Regional WA.
Babies and pre-schoolers (0 to 4)
2021 count
229
% of total
4.8%
Change from 2016
-1.5pp
229
4.8%
-1.5pp
Primary schoolers (5 to 11)
2021 count
409
% of total
8.6%
Change from 2016
-1.3pp
409
8.6%
-1.3pp
Secondary schoolers (12 to 17)
2021 count
435
% of total
9.1%
Change from 2016
-0.7pp
435
9.1%
-0.7pp
Tertiary education and independence (18 to 24)
2021 count
346
% of total
7.2%
Change from 2016
0.0pp
346
7.2%
0.0pp
Young workforce (25 to 34)
2021 count
541
% of total
11.3%
Change from 2016
+0.3pp
541
11.3%
+0.3pp
Parents and homebuilders (35 to 49)
2021 count
803
% of total
16.8%
Change from 2016
-0.4pp
803
16.8%
-0.4pp
Older workers and pre-retirees (50 to 59)
2021 count
630
% of total
13.2%
Change from 2016
-0.4pp
630
13.2%
-0.4pp
Empty nesters and retirees (60 to 69)
2021 count
649
% of total
13.6%
Change from 2016
+1.0pp
649
13.6%
+1.0pp
Seniors (70 to 84)
2021 count
588
% of total
12.3%
Change from 2016
+2.4pp
588
12.3%
+2.4pp
Elderly aged (85 and over)
2021 count
151
% of total
3.2%
Change from 2016
+0.6pp
151
3.2%
+0.6pp
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-94
-1.5pp
Primary schoolers (5 to 11)
-102
-1.3pp
Secondary schoolers (12 to 17)
-70
-0.7pp
Tertiary education and independence (18 to 24)
-25
0.0pp
Young workforce (25 to 34)
-26
+0.3pp
Parents and homebuilders (35 to 49)
-87
-0.4pp
Older workers and pre-retirees (50 to 59)
-70
-0.4pp
Empty nesters and retirees (60 to 69)
-1
+1.0pp
Seniors (70 to 84)
+78
+2.4pp
Elderly aged (85 and over)
+17
+0.6pp
Data table
Service age groups for Narrogin (S). Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Regional WA.
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Regional WA% | Count | % | Regional WA% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 229 | 4.8% | 6.0% | 323 | 6.3% | 6.6% | -94 | -1.5pp |
| Primary schoolers (5 to 11) | 409 | 8.6% | 9.5% | 511 | 9.9% | 9.8% | -102 | -1.3pp |
| Secondary schoolers (12 to 17) | 435 | 9.1% | 7.6% | 505 | 9.8% | 7.4% | -70 | -0.7pp |
| Tertiary education and independence (18 to 24) | 346 | 7.2% | 6.7% | 371 | 7.2% | 7.0% | -25 | 0.0pp |
| Young workforce (25 to 34) | 541 | 11.3% | 12.5% | 567 | 11.0% | 13.6% | -26 | +0.3pp |
| Parents and homebuilders (35 to 49) | 803 | 16.8% | 19.9% | 890 | 17.2% | 20.8% | -87 | -0.4pp |
| Older workers and pre-retirees (50 to 59) | 630 | 13.2% | 13.7% | 700 | 13.6% | 14.1% | -70 | -0.4pp |
| Empty nesters and retirees (60 to 69) | 649 | 13.6% | 12.4% | 650 | 12.6% | 11.3% | -1 | +1.0pp |
| Seniors (70 to 84) | 588 | 12.3% | 10.1% | 510 | 9.9% | 7.8% | +78 | +2.4pp |
| Elderly aged (85 and over) | 151 | 3.2% | 1.7% | 134 | 2.6% | 1.5% | +17 | +0.6pp |
| Total | 4,779 | 100.0% | 100.0% | 5,162 | 100.0% | 100.0% | -383 | 0.0pp |