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 Mount Annan (part), accounting for 23% (2,710 people). This share was higher than Camden (A) (22.4%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 185 people and 1.6 percentage points.
Section overview
Age structure - Service age groups
Mount Annan (part) - Total persons (Usual residence)
This table summarises service age groups for Mount Annan (part) in 2021 for persons, with comparison against Camden (A) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Mount Annan (part), with comparison markers for Camden (A).
Babies and pre-schoolers (0 to 4)
2021 count
788
% of total
6.7%
Change from 2016
-1.5pp
788
6.7%
-1.5pp
Primary schoolers (5 to 11)
2021 count
1,380
% of total
11.7%
Change from 2016
-0.5pp
1,380
11.7%
-0.5pp
Secondary schoolers (12 to 17)
2021 count
1,222
% of total
10.4%
Change from 2016
+0.5pp
1,222
10.4%
+0.5pp
Tertiary education and independence (18 to 24)
2021 count
1,173
% of total
10.0%
Change from 2016
+0.6pp
1,173
10.0%
+0.6pp
Young workforce (25 to 34)
2021 count
1,337
% of total
11.3%
Change from 2016
-1.6pp
1,337
11.3%
-1.6pp
Parents and homebuilders (35 to 49)
2021 count
2,710
% of total
23.0%
Change from 2016
-1.5pp
2,710
23.0%
-1.5pp
Older workers and pre-retirees (50 to 59)
2021 count
1,569
% of total
13.3%
Change from 2016
+1.4pp
1,569
13.3%
+1.4pp
Empty nesters and retirees (60 to 69)
2021 count
975
% of total
8.3%
Change from 2016
+1.1pp
975
8.3%
+1.1pp
Seniors (70 to 84)
2021 count
584
% of total
5.0%
Change from 2016
+1.6pp
584
5.0%
+1.6pp
Elderly aged (85 and over)
2021 count
57
% of total
0.5%
Change from 2016
+0.2pp
57
0.5%
+0.2pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-177
-1.5pp
Primary schoolers (5 to 11)
-52
-0.5pp
Secondary schoolers (12 to 17)
+63
+0.5pp
Tertiary education and independence (18 to 24)
+77
+0.6pp
Young workforce (25 to 34)
-170
-1.6pp
Parents and homebuilders (35 to 49)
-162
-1.5pp
Older workers and pre-retirees (50 to 59)
+174
+1.4pp
Empty nesters and retirees (60 to 69)
+134
+1.1pp
Seniors (70 to 84)
+185
+1.6pp
Elderly aged (85 and over)
+20
+0.2pp
Data table
Service age groups for Mount Annan (part). Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Camden (A).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Camden (A)% | Count | % | Camden (A)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 788 | 6.7% | 9.4% | 965 | 8.2% | 8.4% | -177 | -1.5pp |
| Primary schoolers (5 to 11) | 1,380 | 11.7% | 11.4% | 1,432 | 12.2% | 11.1% | -52 | -0.5pp |
| Secondary schoolers (12 to 17) | 1,222 | 10.4% | 8.3% | 1,159 | 9.9% | 8.6% | +63 | +0.5pp |
| Tertiary education and independence (18 to 24) | 1,173 | 10.0% | 8.3% | 1,096 | 9.4% | 8.9% | +77 | +0.6pp |
| Young workforce (25 to 34) | 1,337 | 11.3% | 16.3% | 1,507 | 12.9% | 15.2% | -170 | -1.6pp |
| Parents and homebuilders (35 to 49) | 2,710 | 23.0% | 22.4% | 2,872 | 24.5% | 22.0% | -162 | -1.5pp |
| Older workers and pre-retirees (50 to 59) | 1,569 | 13.3% | 10.0% | 1,395 | 11.9% | 10.9% | +174 | +1.4pp |
| Empty nesters and retirees (60 to 69) | 975 | 8.3% | 7.3% | 841 | 7.2% | 8.2% | +134 | +1.1pp |
| Seniors (70 to 84) | 584 | 5.0% | 5.6% | 399 | 3.4% | 5.5% | +185 | +1.6pp |
| Elderly aged (85 and over) | 57 | 0.5% | 1.0% | 37 | 0.3% | 1.2% | +20 | +0.2pp |
| Total | 11,784 | 100.0% | 100.0% | 11,703 | 100.0% | 100.0% | +81 | 0.0pp |