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, accounting for 16.8% (658 people). This share was similar to Narrogin (S) (16.8%). Since 2016, the biggest change was in Parents and homebuilders (35 to 49), which increased by 658 people and 16.8 percentage points.
Section overview
Age structure - Service age groups
Narrogin - Total persons (Usual residence)
This table summarises service age groups for Narrogin in 2021 for persons, with comparison against Narrogin (S) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Narrogin, with comparison markers for Narrogin (S).
Babies and pre-schoolers (0 to 4)
2021 count
196
% of total
5.0%
Change from 2016
+5.0pp
196
5.0%
+5.0pp
Primary schoolers (5 to 11)
2021 count
322
% of total
8.2%
Change from 2016
+8.2pp
322
8.2%
+8.2pp
Secondary schoolers (12 to 17)
2021 count
320
% of total
8.1%
Change from 2016
+8.1pp
320
8.1%
+8.1pp
Tertiary education and independence (18 to 24)
2021 count
303
% of total
7.7%
Change from 2016
+7.7pp
303
7.7%
+7.7pp
Young workforce (25 to 34)
2021 count
485
% of total
12.4%
Change from 2016
+12.4pp
485
12.4%
+12.4pp
Parents and homebuilders (35 to 49)
2021 count
658
% of total
16.8%
Change from 2016
+16.8pp
658
16.8%
+16.8pp
Older workers and pre-retirees (50 to 59)
2021 count
501
% of total
12.8%
Change from 2016
+12.8pp
501
12.8%
+12.8pp
Empty nesters and retirees (60 to 69)
2021 count
497
% of total
12.7%
Change from 2016
+12.7pp
497
12.7%
+12.7pp
Seniors (70 to 84)
2021 count
492
% of total
12.5%
Change from 2016
+12.5pp
492
12.5%
+12.5pp
Elderly aged (85 and over)
2021 count
144
% of total
3.7%
Change from 2016
+3.7pp
144
3.7%
+3.7pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+196
+5.0pp
Primary schoolers (5 to 11)
+322
+8.2pp
Secondary schoolers (12 to 17)
+320
+8.1pp
Tertiary education and independence (18 to 24)
+303
+7.7pp
Young workforce (25 to 34)
+485
+12.4pp
Parents and homebuilders (35 to 49)
+658
+16.8pp
Older workers and pre-retirees (50 to 59)
+501
+12.8pp
Empty nesters and retirees (60 to 69)
+497
+12.7pp
Seniors (70 to 84)
+492
+12.5pp
Elderly aged (85 and over)
+144
+3.7pp
Data table
Service age groups for Narrogin. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Narrogin (S).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Narrogin (S)% | Count | % | Narrogin (S)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 196 | 5.0% | 4.8% | 0 | 0.0% | 6.3% | +196 | +5.0pp |
| Primary schoolers (5 to 11) | 322 | 8.2% | 8.6% | 0 | 0.0% | 9.9% | +322 | +8.2pp |
| Secondary schoolers (12 to 17) | 320 | 8.1% | 9.1% | 0 | 0.0% | 9.8% | +320 | +8.1pp |
| Tertiary education and independence (18 to 24) | 303 | 7.7% | 7.2% | 0 | 0.0% | 7.2% | +303 | +7.7pp |
| Young workforce (25 to 34) | 485 | 12.4% | 11.3% | 0 | 0.0% | 11.0% | +485 | +12.4pp |
| Parents and homebuilders (35 to 49) | 658 | 16.8% | 16.8% | 0 | 0.0% | 17.2% | +658 | +16.8pp |
| Older workers and pre-retirees (50 to 59) | 501 | 12.8% | 13.2% | 0 | 0.0% | 13.6% | +501 | +12.8pp |
| Empty nesters and retirees (60 to 69) | 497 | 12.7% | 13.6% | 0 | 0.0% | 12.6% | +497 | +12.7pp |
| Seniors (70 to 84) | 492 | 12.5% | 12.3% | 0 | 0.0% | 9.9% | +492 | +12.5pp |
| Elderly aged (85 and over) | 144 | 3.7% | 3.2% | 0 | 0.0% | 2.6% | +144 | +3.7pp |
| Total | 3,927 | 100.0% | 100.0% | 11 | 100.0% | 100.0% | +3,916 | 0.0pp |