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, Older workers and pre-retirees (50 to 59) was the most common category among residents in Tarzali, accounting for 23.4% (101 people). This share was higher than Tablelands (R) (14.3%). Since 2016, the biggest change was in Empty nesters and retirees (60 to 69), which increased by 24 people and 4.2 percentage points.
Section overview
Age structure - Service age groups
Tarzali - Total persons (Usual residence)
This table summarises service age groups for Tarzali in 2021 for persons, with comparison against Tablelands (R) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Tarzali, with comparison markers for Tablelands (R).
Babies and pre-schoolers (0 to 4)
2021 count
16
% of total
3.7%
Change from 2016
-0.6pp
16
3.7%
-0.6pp
Primary schoolers (5 to 11)
2021 count
24
% of total
5.6%
Change from 2016
-2.9pp
24
5.6%
-2.9pp
Secondary schoolers (12 to 17)
2021 count
34
% of total
7.9%
Change from 2016
-3.2pp
34
7.9%
-3.2pp
Tertiary education and independence (18 to 24)
2021 count
21
% of total
4.9%
Change from 2016
-2.9pp
21
4.9%
-2.9pp
Young workforce (25 to 34)
2021 count
21
% of total
4.9%
Change from 2016
+0.1pp
21
4.9%
+0.1pp
Parents and homebuilders (35 to 49)
2021 count
64
% of total
14.8%
Change from 2016
+2.2pp
64
14.8%
+2.2pp
Older workers and pre-retirees (50 to 59)
2021 count
101
% of total
23.4%
Change from 2016
-3.5pp
101
23.4%
-3.5pp
Empty nesters and retirees (60 to 69)
2021 count
92
% of total
21.3%
Change from 2016
+4.2pp
92
21.3%
+4.2pp
Seniors (70 to 84)
2021 count
48
% of total
11.1%
Change from 2016
+3.3pp
48
11.1%
+3.3pp
Elderly aged (85 and over)
2021 count
3
% of total
0.7%
Change from 2016
+0.7pp
3
0.7%
+0.7pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-1
-0.6pp
Primary schoolers (5 to 11)
-10
-2.9pp
Secondary schoolers (12 to 17)
-10
-3.2pp
Tertiary education and independence (18 to 24)
-10
-2.9pp
Young workforce (25 to 34)
+2
+0.1pp
Parents and homebuilders (35 to 49)
+14
+2.2pp
Older workers and pre-retirees (50 to 59)
-6
-3.5pp
Empty nesters and retirees (60 to 69)
+24
+4.2pp
Seniors (70 to 84)
+17
+3.3pp
Elderly aged (85 and over)
+3
+0.7pp
Data table
Service age groups for Tarzali. Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Tablelands (R).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Tablelands (R)% | Count | % | Tablelands (R)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 16 | 3.7% | 4.1% | 17 | 4.3% | 5.3% | -1 | -0.6pp |
| Primary schoolers (5 to 11) | 24 | 5.6% | 8.5% | 34 | 8.5% | 9.2% | -10 | -2.9pp |
| Secondary schoolers (12 to 17) | 34 | 7.9% | 8.5% | 44 | 11.1% | 7.6% | -10 | -3.2pp |
| Tertiary education and independence (18 to 24) | 21 | 4.9% | 5.3% | 31 | 7.8% | 5.9% | -10 | -2.9pp |
| Young workforce (25 to 34) | 21 | 4.9% | 8.9% | 19 | 4.8% | 8.3% | +2 | +0.1pp |
| Parents and homebuilders (35 to 49) | 64 | 14.8% | 15.8% | 50 | 12.6% | 16.7% | +14 | +2.2pp |
| Older workers and pre-retirees (50 to 59) | 101 | 23.4% | 14.3% | 107 | 26.9% | 15.3% | -6 | -3.5pp |
| Empty nesters and retirees (60 to 69) | 92 | 21.3% | 16.2% | 68 | 17.1% | 15.8% | +24 | +4.2pp |
| Seniors (70 to 84) | 48 | 11.1% | 15.6% | 31 | 7.8% | 13.3% | +17 | +3.3pp |
| Elderly aged (85 and over) | 3 | 0.7% | 2.7% | 0 | 0.0% | 2.5% | +3 | +0.7pp |
| Total | 431 | 100.0% | 100.0% | 398 | 100.0% | 100.0% | +33 | 0.0pp |