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 Acacia Ridge, accounting for 19% (1,419 people). This share was lower than Brisbane (C) (22.1%). Since 2016, the biggest change was in Tertiary education and independence (18 to 24), which decreased by 124 people and 1.8 percentage points.
Section overview
Age structure - Service age groups
Acacia Ridge - Total persons (Usual residence)
This table summarises service age groups for Acacia Ridge in 2021 for persons, with comparison against Brisbane (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Acacia Ridge, with comparison markers for Brisbane (C).
Babies and pre-schoolers (0 to 4)
2021 count
551
% of total
7.4%
Change from 2016
-0.3pp
551
7.4%
-0.3pp
Primary schoolers (5 to 11)
2021 count
745
% of total
10.0%
Change from 2016
+1.3pp
745
10.0%
+1.3pp
Secondary schoolers (12 to 17)
2021 count
516
% of total
6.9%
Change from 2016
-0.1pp
516
6.9%
-0.1pp
Tertiary education and independence (18 to 24)
2021 count
684
% of total
9.1%
Change from 2016
-1.8pp
684
9.1%
-1.8pp
Young workforce (25 to 34)
2021 count
1,295
% of total
17.3%
Change from 2016
+0.4pp
1,295
17.3%
+0.4pp
Parents and homebuilders (35 to 49)
2021 count
1,419
% of total
19.0%
Change from 2016
0.0pp
1,419
19.0%
0.0pp
Older workers and pre-retirees (50 to 59)
2021 count
839
% of total
11.2%
Change from 2016
+0.3pp
839
11.2%
+0.3pp
Empty nesters and retirees (60 to 69)
2021 count
660
% of total
8.8%
Change from 2016
0.0pp
660
8.8%
0.0pp
Seniors (70 to 84)
2021 count
630
% of total
8.4%
Change from 2016
+0.3pp
630
8.4%
+0.3pp
Elderly aged (85 and over)
2021 count
141
% of total
1.9%
Change from 2016
0.0pp
141
1.9%
0.0pp
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
-0.3pp
Primary schoolers (5 to 11)
+96
+1.3pp
Secondary schoolers (12 to 17)
-2
-0.1pp
Tertiary education and independence (18 to 24)
-124
-1.8pp
Young workforce (25 to 34)
+42
+0.4pp
Parents and homebuilders (35 to 49)
+12
0.0pp
Older workers and pre-retirees (50 to 59)
+30
+0.3pp
Empty nesters and retirees (60 to 69)
+9
0.0pp
Seniors (70 to 84)
+29
+0.3pp
Elderly aged (85 and over)
+1
0.0pp
Data table
Service age groups for Acacia Ridge. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Brisbane (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Brisbane (C)% | Count | % | Brisbane (C)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 551 | 7.4% | 5.5% | 570 | 7.7% | 6.0% | -19 | -0.3pp |
| Primary schoolers (5 to 11) | 745 | 10.0% | 8.4% | 649 | 8.7% | 8.3% | +96 | +1.3pp |
| Secondary schoolers (12 to 17) | 516 | 6.9% | 7.0% | 518 | 7.0% | 6.7% | -2 | -0.1pp |
| Tertiary education and independence (18 to 24) | 684 | 9.1% | 10.4% | 808 | 10.9% | 11.5% | -124 | -1.8pp |
| Young workforce (25 to 34) | 1,295 | 17.3% | 16.6% | 1,253 | 16.9% | 17.3% | +42 | +0.4pp |
| Parents and homebuilders (35 to 49) | 1,419 | 19.0% | 22.1% | 1,407 | 19.0% | 21.5% | +12 | 0.0pp |
| Older workers and pre-retirees (50 to 59) | 839 | 11.2% | 11.8% | 809 | 10.9% | 11.6% | +30 | +0.3pp |
| Empty nesters and retirees (60 to 69) | 660 | 8.8% | 8.8% | 651 | 8.8% | 8.6% | +9 | 0.0pp |
| Seniors (70 to 84) | 630 | 8.4% | 7.7% | 601 | 8.1% | 6.6% | +29 | +0.3pp |
| Elderly aged (85 and over) | 141 | 1.9% | 1.8% | 140 | 1.9% | 1.8% | +1 | 0.0pp |
| Total | 7,486 | 100.0% | 100.0% | 7,421 | 100.0% | 100.0% | +65 | 0.0pp |