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 (S), accounting for 17.9% (727 people). This share was lower than Regional WA (19.9%). Since 2016, the biggest change was in Older workers and pre-retirees (50 to 59), which decreased by 104 people and 2.2 percentage points.
Section overview
Age structure - Service age groups
Katanning (S) - Total persons (Usual residence)
This table summarises service age groups for Katanning (S) in 2021 for persons, with comparison against Regional WA and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Katanning (S), with comparison markers for Regional WA.
Babies and pre-schoolers (0 to 4)
2021 count
274
% of total
6.8%
Change from 2016
+0.7pp
274
6.8%
+0.7pp
Primary schoolers (5 to 11)
2021 count
369
% of total
9.1%
Change from 2016
-1.5pp
369
9.1%
-1.5pp
Secondary schoolers (12 to 17)
2021 count
310
% of total
7.6%
Change from 2016
+0.6pp
310
7.6%
+0.6pp
Tertiary education and independence (18 to 24)
2021 count
331
% of total
8.2%
Change from 2016
+0.1pp
331
8.2%
+0.1pp
Young workforce (25 to 34)
2021 count
536
% of total
13.2%
Change from 2016
+1.2pp
536
13.2%
+1.2pp
Parents and homebuilders (35 to 49)
2021 count
727
% of total
17.9%
Change from 2016
-0.1pp
727
17.9%
-0.1pp
Older workers and pre-retirees (50 to 59)
2021 count
515
% of total
12.7%
Change from 2016
-2.2pp
515
12.7%
-2.2pp
Empty nesters and retirees (60 to 69)
2021 count
490
% of total
12.1%
Change from 2016
+0.4pp
490
12.1%
+0.4pp
Seniors (70 to 84)
2021 count
408
% of total
10.1%
Change from 2016
+0.3pp
408
10.1%
+0.3pp
Elderly aged (85 and over)
2021 count
93
% of total
2.3%
Change from 2016
+0.1pp
93
2.3%
+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)
+19
+0.7pp
Primary schoolers (5 to 11)
-70
-1.5pp
Secondary schoolers (12 to 17)
+19
+0.6pp
Tertiary education and independence (18 to 24)
-4
+0.1pp
Young workforce (25 to 34)
+37
+1.2pp
Parents and homebuilders (35 to 49)
-19
-0.1pp
Older workers and pre-retirees (50 to 59)
-104
-2.2pp
Empty nesters and retirees (60 to 69)
+4
+0.4pp
Seniors (70 to 84)
0
+0.3pp
Elderly aged (85 and over)
0
+0.1pp
Data table
Service age groups for Katanning (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) | 274 | 6.8% | 6.0% | 255 | 6.1% | 6.6% | +19 | +0.7pp |
| Primary schoolers (5 to 11) | 369 | 9.1% | 9.5% | 439 | 10.6% | 9.8% | -70 | -1.5pp |
| Secondary schoolers (12 to 17) | 310 | 7.6% | 7.6% | 291 | 7.0% | 7.4% | +19 | +0.6pp |
| Tertiary education and independence (18 to 24) | 331 | 8.2% | 6.7% | 335 | 8.1% | 7.0% | -4 | +0.1pp |
| Young workforce (25 to 34) | 536 | 13.2% | 12.5% | 499 | 12.0% | 13.6% | +37 | +1.2pp |
| Parents and homebuilders (35 to 49) | 727 | 17.9% | 19.9% | 746 | 18.0% | 20.8% | -19 | -0.1pp |
| Older workers and pre-retirees (50 to 59) | 515 | 12.7% | 13.7% | 619 | 14.9% | 14.1% | -104 | -2.2pp |
| Empty nesters and retirees (60 to 69) | 490 | 12.1% | 12.4% | 486 | 11.7% | 11.3% | +4 | +0.4pp |
| Seniors (70 to 84) | 408 | 10.1% | 10.1% | 408 | 9.8% | 7.8% | 0 | +0.3pp |
| Elderly aged (85 and over) | 93 | 2.3% | 1.7% | 93 | 2.2% | 1.5% | 0 | +0.1pp |
| Total | 4,057 | 100.0% | 100.0% | 4,151 | 100.0% | 100.0% | -94 | 0.0pp |