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 Yass Valley (A), accounting for 20.3% (3,502 people). This share was higher than Regional NSW (17.5%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 469 people and 2.2 percentage points.
Section overview
Age structure - Service age groups
Yass Valley (A) - Total persons (Usual residence)
This table summarises service age groups for Yass Valley (A) in 2021 for persons, with comparison against Regional NSW and change since 2016.
Chart view
Age structure - Service age groups snapshot
2021 distribution by category for Yass Valley (A), with comparison markers for Regional NSW.
Babies and pre-schoolers (0 to 4)
2021 count
927
% of total
5.4%
Change from 2016
-0.9pp
927
5.4%
-0.9pp
Primary schoolers (5 to 11)
2021 count
1,739
% of total
10.1%
Change from 2016
-0.3pp
1,739
10.1%
-0.3pp
Secondary schoolers (12 to 17)
2021 count
1,496
% of total
8.7%
Change from 2016
+0.3pp
1,496
8.7%
+0.3pp
Tertiary education and independence (18 to 24)
2021 count
1,173
% of total
6.8%
Change from 2016
-0.1pp
1,173
6.8%
-0.1pp
Young workforce (25 to 34)
2021 count
1,600
% of total
9.3%
Change from 2016
+0.3pp
1,600
9.3%
+0.3pp
Parents and homebuilders (35 to 49)
2021 count
3,502
% of total
20.3%
Change from 2016
-1.6pp
3,502
20.3%
-1.6pp
Older workers and pre-retirees (50 to 59)
2021 count
2,543
% of total
14.7%
Change from 2016
+0.2pp
2,543
14.7%
+0.2pp
Empty nesters and retirees (60 to 69)
2021 count
2,134
% of total
12.3%
Change from 2016
0.0pp
2,134
12.3%
0.0pp
Seniors (70 to 84)
2021 count
1,841
% of total
10.7%
Change from 2016
+2.2pp
1,841
10.7%
+2.2pp
Elderly aged (85 and over)
2021 count
335
% of total
1.9%
Change from 2016
+0.1pp
335
1.9%
+0.1pp
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-82
-0.9pp
Primary schoolers (5 to 11)
+54
-0.3pp
Secondary schoolers (12 to 17)
+146
+0.3pp
Tertiary education and independence (18 to 24)
+61
-0.1pp
Young workforce (25 to 34)
+151
+0.3pp
Parents and homebuilders (35 to 49)
-28
-1.6pp
Older workers and pre-retirees (50 to 59)
+207
+0.2pp
Empty nesters and retirees (60 to 69)
+151
0.0pp
Seniors (70 to 84)
+469
+2.2pp
Elderly aged (85 and over)
+40
+0.1pp
Data table
Service age groups for Yass Valley (A). Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Regional NSW.
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Regional NSW% | Count | % | Regional NSW% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 927 | 5.4% | 5.5% | 1,009 | 6.3% | 5.8% | -82 | -0.9pp |
| Primary schoolers (5 to 11) | 1,739 | 10.1% | 8.6% | 1,685 | 10.4% | 8.9% | +54 | -0.3pp |
| Secondary schoolers (12 to 17) | 1,496 | 8.7% | 7.4% | 1,350 | 8.4% | 7.3% | +146 | +0.3pp |
| Tertiary education and independence (18 to 24) | 1,173 | 6.8% | 7.6% | 1,112 | 6.9% | 7.9% | +61 | -0.1pp |
| Young workforce (25 to 34) | 1,600 | 9.3% | 11.6% | 1,449 | 9.0% | 11.0% | +151 | +0.3pp |
| Parents and homebuilders (35 to 49) | 3,502 | 20.3% | 17.5% | 3,530 | 21.9% | 18.0% | -28 | -1.6pp |
| Older workers and pre-retirees (50 to 59) | 2,543 | 14.7% | 12.8% | 2,336 | 14.5% | 13.8% | +207 | +0.2pp |
| Empty nesters and retirees (60 to 69) | 2,134 | 12.3% | 13.3% | 1,983 | 12.3% | 13.1% | +151 | 0.0pp |
| Seniors (70 to 84) | 1,841 | 10.7% | 13.0% | 1,372 | 8.5% | 11.4% | +469 | +2.2pp |
| Elderly aged (85 and over) | 335 | 1.9% | 2.8% | 295 | 1.8% | 2.7% | +40 | +0.1pp |
| Total | 17,281 | 100.0% | 100.0% | 16,142 | 100.0% | 100.0% | +1,139 | 0.0pp |