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 Tullibigeal, accounting for 13.7% (36 people). This share was similar to Lachlan (A) (13.6%). Since 2016, the biggest change was in Tertiary education and independence (18 to 24), which increased by 12 people and 3.9 percentage points.
Section overview
Age structure - Service age groups
Tullibigeal - Total persons (Usual residence)
This table summarises service age groups for Tullibigeal in 2021 for persons, with comparison against Lachlan (A) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Tullibigeal, with comparison markers for Lachlan (A).
Babies and pre-schoolers (0 to 4)
2021 count
18
% of total
6.8%
Change from 2016
+2.1pp
18
6.8%
+2.1pp
Primary schoolers (5 to 11)
2021 count
29
% of total
11.0%
Change from 2016
+1.1pp
29
11.0%
+1.1pp
Secondary schoolers (12 to 17)
2021 count
12
% of total
4.6%
Change from 2016
+0.7pp
12
4.6%
+0.7pp
Tertiary education and independence (18 to 24)
2021 count
24
% of total
9.1%
Change from 2016
+3.9pp
24
9.1%
+3.9pp
Young workforce (25 to 34)
2021 count
21
% of total
8.0%
Change from 2016
-1.0pp
21
8.0%
-1.0pp
Parents and homebuilders (35 to 49)
2021 count
34
% of total
12.9%
Change from 2016
-4.3pp
34
12.9%
-4.3pp
Older workers and pre-retirees (50 to 59)
2021 count
32
% of total
12.2%
Change from 2016
-2.8pp
32
12.2%
-2.8pp
Empty nesters and retirees (60 to 69)
2021 count
36
% of total
13.7%
Change from 2016
+1.3pp
36
13.7%
+1.3pp
Seniors (70 to 84)
2021 count
19
% of total
7.2%
Change from 2016
-4.4pp
19
7.2%
-4.4pp
Elderly aged (85 and over)
2021 count
9
% of total
3.4%
Change from 2016
+0.4pp
9
3.4%
+0.4pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
+7
+2.1pp
Primary schoolers (5 to 11)
+6
+1.1pp
Secondary schoolers (12 to 17)
+3
+0.7pp
Tertiary education and independence (18 to 24)
+12
+3.9pp
Young workforce (25 to 34)
0
-1.0pp
Parents and homebuilders (35 to 49)
-6
-4.3pp
Older workers and pre-retirees (50 to 59)
-3
-2.8pp
Empty nesters and retirees (60 to 69)
+7
+1.3pp
Seniors (70 to 84)
-8
-4.4pp
Elderly aged (85 and over)
+2
+0.4pp
Data table
Service age groups for Tullibigeal. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Lachlan (A).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Lachlan (A)% | Count | % | Lachlan (A)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 18 | 6.8% | 6.6% | 11 | 4.7% | 8.0% | +7 | +2.1pp |
| Primary schoolers (5 to 11) | 29 | 11.0% | 11.0% | 23 | 9.9% | 10.1% | +6 | +1.1pp |
| Secondary schoolers (12 to 17) | 12 | 4.6% | 7.1% | 9 | 3.9% | 6.8% | +3 | +0.7pp |
| Tertiary education and independence (18 to 24) | 24 | 9.1% | 6.2% | 12 | 5.2% | 7.7% | +12 | +3.9pp |
| Young workforce (25 to 34) | 21 | 8.0% | 11.6% | 21 | 9.0% | 12.0% | 0 | -1.0pp |
| Parents and homebuilders (35 to 49) | 34 | 12.9% | 17.1% | 40 | 17.2% | 15.6% | -6 | -4.3pp |
| Older workers and pre-retirees (50 to 59) | 32 | 12.2% | 11.8% | 35 | 15.0% | 13.3% | -3 | -2.8pp |
| Empty nesters and retirees (60 to 69) | 36 | 13.7% | 13.6% | 29 | 12.4% | 12.1% | +7 | +1.3pp |
| Seniors (70 to 84) | 19 | 7.2% | 11.9% | 27 | 11.6% | 11.9% | -8 | -4.4pp |
| Elderly aged (85 and over) | 9 | 3.4% | 3.4% | 7 | 3.0% | 2.7% | +2 | +0.4pp |
| Total | 263 | 100.0% | 100.0% | 233 | 100.0% | 100.0% | +30 | 0.0pp |