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, Young workforce (25 to 34) was the most common category among residents in Petrie Terrace, accounting for 29.2% (341 people). This share was higher than Brisbane (C) (16.6%). Since 2016, the biggest change was in Older workers and pre-retirees (50 to 59), which increased by 31 people and 2.3 percentage points.
Section overview
Age structure - Service age groups
Petrie Terrace - Total persons (Usual residence)
This table summarises service age groups for Petrie Terrace in 2021 for persons, with comparison against Brisbane (C) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Petrie Terrace, with comparison markers for Brisbane (C).
Babies and pre-schoolers (0 to 4)
2021 count
24
% of total
2.1%
Change from 2016
-0.7pp
24
2.1%
-0.7pp
Primary schoolers (5 to 11)
2021 count
46
% of total
3.9%
Change from 2016
+1.2pp
46
3.9%
+1.2pp
Secondary schoolers (12 to 17)
2021 count
36
% of total
3.1%
Change from 2016
-0.7pp
36
3.1%
-0.7pp
Tertiary education and independence (18 to 24)
2021 count
221
% of total
18.9%
Change from 2016
-1.9pp
221
18.9%
-1.9pp
Young workforce (25 to 34)
2021 count
341
% of total
29.2%
Change from 2016
-0.9pp
341
29.2%
-0.9pp
Parents and homebuilders (35 to 49)
2021 count
226
% of total
19.3%
Change from 2016
-1.6pp
226
19.3%
-1.6pp
Older workers and pre-retirees (50 to 59)
2021 count
141
% of total
12.1%
Change from 2016
+2.3pp
141
12.1%
+2.3pp
Empty nesters and retirees (60 to 69)
2021 count
68
% of total
5.8%
Change from 2016
-0.2pp
68
5.8%
-0.2pp
Seniors (70 to 84)
2021 count
49
% of total
4.2%
Change from 2016
+1.3pp
49
4.2%
+1.3pp
Elderly aged (85 and over)
2021 count
3
% of total
0.3%
Change from 2016
-0.1pp
3
0.3%
-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)
-8
-0.7pp
Primary schoolers (5 to 11)
+16
+1.2pp
Secondary schoolers (12 to 17)
-7
-0.7pp
Tertiary education and independence (18 to 24)
-13
-1.9pp
Young workforce (25 to 34)
+3
-0.9pp
Parents and homebuilders (35 to 49)
-9
-1.6pp
Older workers and pre-retirees (50 to 59)
+31
+2.3pp
Empty nesters and retirees (60 to 69)
+1
-0.2pp
Seniors (70 to 84)
+16
+1.3pp
Elderly aged (85 and over)
-1
-0.1pp
Data table
Service age groups for Petrie Terrace. 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) | 24 | 2.1% | 5.5% | 32 | 2.8% | 6.0% | -8 | -0.7pp |
| Primary schoolers (5 to 11) | 46 | 3.9% | 8.4% | 30 | 2.7% | 8.3% | +16 | +1.2pp |
| Secondary schoolers (12 to 17) | 36 | 3.1% | 7.0% | 43 | 3.8% | 6.7% | -7 | -0.7pp |
| Tertiary education and independence (18 to 24) | 221 | 18.9% | 10.4% | 234 | 20.8% | 11.5% | -13 | -1.9pp |
| Young workforce (25 to 34) | 341 | 29.2% | 16.6% | 338 | 30.1% | 17.3% | +3 | -0.9pp |
| Parents and homebuilders (35 to 49) | 226 | 19.3% | 22.1% | 235 | 20.9% | 21.5% | -9 | -1.6pp |
| Older workers and pre-retirees (50 to 59) | 141 | 12.1% | 11.8% | 110 | 9.8% | 11.6% | +31 | +2.3pp |
| Empty nesters and retirees (60 to 69) | 68 | 5.8% | 8.8% | 67 | 6.0% | 8.6% | +1 | -0.2pp |
| Seniors (70 to 84) | 49 | 4.2% | 7.7% | 33 | 2.9% | 6.6% | +16 | +1.3pp |
| Elderly aged (85 and over) | 3 | 0.3% | 1.8% | 4 | 0.4% | 1.8% | -1 | -0.1pp |
| Total | 1,168 | 100.0% | 100.0% | 1,124 | 100.0% | 100.0% | +44 | 0.0pp |