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, Empty nesters and retirees (60 to 69) was the most common category among residents in Severnlea, accounting for 21.2% (81 people). This share was higher than Southern Downs (R) (15.6%). Since 2016, the biggest change was in Babies and pre-schoolers (0 to 4), which decreased by 16 people and 4.9 percentage points.
Section overview
Age structure - Service age groups
Severnlea - Total persons (Usual residence)
This table summarises service age groups for Severnlea in 2021 for persons, with comparison against Southern Downs (R) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Severnlea, with comparison markers for Southern Downs (R).
Babies and pre-schoolers (0 to 4)
2021 count
13
% of total
3.4%
Change from 2016
-4.9pp
13
3.4%
-4.9pp
Primary schoolers (5 to 11)
2021 count
34
% of total
8.9%
Change from 2016
-0.8pp
34
8.9%
-0.8pp
Secondary schoolers (12 to 17)
2021 count
40
% of total
10.5%
Change from 2016
+3.4pp
40
10.5%
+3.4pp
Tertiary education and independence (18 to 24)
2021 count
18
% of total
4.7%
Change from 2016
+0.1pp
18
4.7%
+0.1pp
Young workforce (25 to 34)
2021 count
39
% of total
10.2%
Change from 2016
+1.1pp
39
10.2%
+1.1pp
Parents and homebuilders (35 to 49)
2021 count
51
% of total
13.4%
Change from 2016
-3.7pp
51
13.4%
-3.7pp
Older workers and pre-retirees (50 to 59)
2021 count
53
% of total
13.9%
Change from 2016
+0.8pp
53
13.9%
+0.8pp
Empty nesters and retirees (60 to 69)
2021 count
81
% of total
21.2%
Change from 2016
-0.5pp
81
21.2%
-0.5pp
Seniors (70 to 84)
2021 count
33
% of total
8.6%
Change from 2016
+1.7pp
33
8.6%
+1.7pp
Elderly aged (85 and over)
2021 count
0
% of total
0.0%
Change from 2016
-1.1pp
0
0.0%
-1.1pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-16
-4.9pp
Primary schoolers (5 to 11)
0
-0.8pp
Secondary schoolers (12 to 17)
+15
+3.4pp
Tertiary education and independence (18 to 24)
+2
+0.1pp
Young workforce (25 to 34)
+7
+1.1pp
Parents and homebuilders (35 to 49)
-9
-3.7pp
Older workers and pre-retirees (50 to 59)
+7
+0.8pp
Empty nesters and retirees (60 to 69)
+5
-0.5pp
Seniors (70 to 84)
+9
+1.7pp
Elderly aged (85 and over)
-4
-1.1pp
Data table
Service age groups for Severnlea. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Southern Downs (R).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Southern Downs (R)% | Count | % | Southern Downs (R)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 13 | 3.4% | 4.6% | 29 | 8.3% | 5.7% | -16 | -4.9pp |
| Primary schoolers (5 to 11) | 34 | 8.9% | 8.4% | 34 | 9.7% | 9.1% | 0 | -0.8pp |
| Secondary schoolers (12 to 17) | 40 | 10.5% | 8.0% | 25 | 7.1% | 8.2% | +15 | +3.4pp |
| Tertiary education and independence (18 to 24) | 18 | 4.7% | 6.3% | 16 | 4.6% | 6.7% | +2 | +0.1pp |
| Young workforce (25 to 34) | 39 | 10.2% | 9.5% | 32 | 9.1% | 9.0% | +7 | +1.1pp |
| Parents and homebuilders (35 to 49) | 51 | 13.4% | 15.5% | 60 | 17.1% | 16.7% | -9 | -3.7pp |
| Older workers and pre-retirees (50 to 59) | 53 | 13.9% | 13.6% | 46 | 13.1% | 14.1% | +7 | +0.8pp |
| Empty nesters and retirees (60 to 69) | 81 | 21.2% | 15.6% | 76 | 21.7% | 14.9% | +5 | -0.5pp |
| Seniors (70 to 84) | 33 | 8.6% | 15.8% | 24 | 6.9% | 12.9% | +9 | +1.7pp |
| Elderly aged (85 and over) | 0 | 0.0% | 2.8% | 4 | 1.1% | 2.6% | -4 | -1.1pp |
| Total | 382 | 100.0% | 100.0% | 350 | 100.0% | 100.0% | +32 | 0.0pp |