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 Katanning, accounting for 17.7% (644 people). This share was similar to Katanning (S) (17.9%). Since 2016, the biggest change was in Older workers and pre-retirees (50 to 59), which decreased by 90 people and 2.1 percentage points.
Section overview
Age structure - Service age groups
Katanning - Total persons (Usual residence)
This table summarises service age groups for Katanning in 2021 for persons, with comparison against Katanning (S) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Katanning, with comparison markers for Katanning (S).
Babies and pre-schoolers (0 to 4)
2021 count
253
% of total
7.0%
Change from 2016
+1.1pp
253
7.0%
+1.1pp
Primary schoolers (5 to 11)
2021 count
328
% of total
9.0%
Change from 2016
-1.5pp
328
9.0%
-1.5pp
Secondary schoolers (12 to 17)
2021 count
280
% of total
7.7%
Change from 2016
+0.6pp
280
7.7%
+0.6pp
Tertiary education and independence (18 to 24)
2021 count
306
% of total
8.4%
Change from 2016
-0.3pp
306
8.4%
-0.3pp
Young workforce (25 to 34)
2021 count
476
% of total
13.1%
Change from 2016
+1.0pp
476
13.1%
+1.0pp
Parents and homebuilders (35 to 49)
2021 count
644
% of total
17.7%
Change from 2016
+0.1pp
644
17.7%
+0.1pp
Older workers and pre-retirees (50 to 59)
2021 count
449
% of total
12.3%
Change from 2016
-2.1pp
449
12.3%
-2.1pp
Empty nesters and retirees (60 to 69)
2021 count
431
% of total
11.9%
Change from 2016
+0.3pp
431
11.9%
+0.3pp
Seniors (70 to 84)
2021 count
383
% of total
10.5%
Change from 2016
+0.7pp
383
10.5%
+0.7pp
Elderly aged (85 and over)
2021 count
94
% of total
2.6%
Change from 2016
+0.1pp
94
2.6%
+0.1pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+31
+1.1pp
Primary schoolers (5 to 11)
-62
-1.5pp
Secondary schoolers (12 to 17)
+13
+0.6pp
Tertiary education and independence (18 to 24)
-19
-0.3pp
Young workforce (25 to 34)
+24
+1.0pp
Parents and homebuilders (35 to 49)
-12
+0.1pp
Older workers and pre-retirees (50 to 59)
-90
-2.1pp
Empty nesters and retirees (60 to 69)
-2
+0.3pp
Seniors (70 to 84)
+18
+0.7pp
Elderly aged (85 and over)
+1
+0.1pp
Data table
Service age groups for Katanning. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Katanning (S).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Katanning (S)% | Count | % | Katanning (S)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 253 | 7.0% | 6.8% | 222 | 5.9% | 6.1% | +31 | +1.1pp |
| Primary schoolers (5 to 11) | 328 | 9.0% | 9.1% | 390 | 10.5% | 10.6% | -62 | -1.5pp |
| Secondary schoolers (12 to 17) | 280 | 7.7% | 7.6% | 267 | 7.1% | 7.0% | +13 | +0.6pp |
| Tertiary education and independence (18 to 24) | 306 | 8.4% | 8.2% | 325 | 8.7% | 8.1% | -19 | -0.3pp |
| Young workforce (25 to 34) | 476 | 13.1% | 13.2% | 452 | 12.1% | 12.0% | +24 | +1.0pp |
| Parents and homebuilders (35 to 49) | 644 | 17.7% | 17.9% | 656 | 17.6% | 18.0% | -12 | +0.1pp |
| Older workers and pre-retirees (50 to 59) | 449 | 12.3% | 12.7% | 539 | 14.4% | 14.9% | -90 | -2.1pp |
| Empty nesters and retirees (60 to 69) | 431 | 11.9% | 12.1% | 433 | 11.6% | 11.7% | -2 | +0.3pp |
| Seniors (70 to 84) | 383 | 10.5% | 10.1% | 365 | 9.8% | 9.8% | +18 | +0.7pp |
| Elderly aged (85 and over) | 94 | 2.6% | 2.3% | 93 | 2.5% | 2.2% | +1 | +0.1pp |
| Total | 3,637 | 100.0% | 100.0% | 3,732 | 100.0% | 100.0% | -95 | 0.0pp |