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 Eureka (NSW), accounting for 19.5% (69 people). This share was lower than Byron (A) (21.7%). Since 2016, the biggest change was in Secondary schoolers (12 to 17), which increased by 46 people and 12.9 percentage points.
Section overview
Age structure - Service age groups
Eureka (NSW) - Total persons (Usual residence)
This table summarises service age groups for Eureka (NSW) in 2021 for persons, with comparison against Byron (A) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Eureka (NSW), with comparison markers for Byron (A).
Babies and pre-schoolers (0 to 4)
2021 count
4
% of total
1.1%
Change from 2016
-4.1pp
4
1.1%
-4.1pp
Primary schoolers (5 to 11)
2021 count
22
% of total
6.2%
Change from 2016
-5.5pp
22
6.2%
-5.5pp
Secondary schoolers (12 to 17)
2021 count
61
% of total
17.3%
Change from 2016
+12.9pp
61
17.3%
+12.9pp
Tertiary education and independence (18 to 24)
2021 count
17
% of total
4.8%
Change from 2016
-3.1pp
17
4.8%
-3.1pp
Young workforce (25 to 34)
2021 count
43
% of total
12.2%
Change from 2016
+5.8pp
43
12.2%
+5.8pp
Parents and homebuilders (35 to 49)
2021 count
69
% of total
19.5%
Change from 2016
-2.4pp
69
19.5%
-2.4pp
Older workers and pre-retirees (50 to 59)
2021 count
63
% of total
17.8%
Change from 2016
+4.1pp
63
17.8%
+4.1pp
Empty nesters and retirees (60 to 69)
2021 count
40
% of total
11.3%
Change from 2016
-7.1pp
40
11.3%
-7.1pp
Seniors (70 to 84)
2021 count
29
% of total
8.2%
Change from 2016
+3.2pp
29
8.2%
+3.2pp
Elderly aged (85 and over)
2021 count
4
% of total
1.1%
Change from 2016
-0.1pp
4
1.1%
-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)
-14
-4.1pp
Primary schoolers (5 to 11)
-18
-5.5pp
Secondary schoolers (12 to 17)
+46
+12.9pp
Tertiary education and independence (18 to 24)
-10
-3.1pp
Young workforce (25 to 34)
+21
+5.8pp
Parents and homebuilders (35 to 49)
-6
-2.4pp
Older workers and pre-retirees (50 to 59)
+16
+4.1pp
Empty nesters and retirees (60 to 69)
-23
-7.1pp
Seniors (70 to 84)
+12
+3.2pp
Elderly aged (85 and over)
0
-0.1pp
Data table
Service age groups for Eureka (NSW). Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Byron (A).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Byron (A)% | Count | % | Byron (A)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 4 | 1.1% | 4.8% | 18 | 5.2% | 4.9% | -14 | -4.1pp |
| Primary schoolers (5 to 11) | 22 | 6.2% | 7.7% | 40 | 11.7% | 8.4% | -18 | -5.5pp |
| Secondary schoolers (12 to 17) | 61 | 17.3% | 6.7% | 15 | 4.4% | 6.8% | +46 | +12.9pp |
| Tertiary education and independence (18 to 24) | 17 | 4.8% | 5.7% | 27 | 7.9% | 5.5% | -10 | -3.1pp |
| Young workforce (25 to 34) | 43 | 12.2% | 13.5% | 22 | 6.4% | 10.8% | +21 | +5.8pp |
| Parents and homebuilders (35 to 49) | 69 | 19.5% | 21.7% | 75 | 21.9% | 21.4% | -6 | -2.4pp |
| Older workers and pre-retirees (50 to 59) | 63 | 17.8% | 13.9% | 47 | 13.7% | 16.6% | +16 | +4.1pp |
| Empty nesters and retirees (60 to 69) | 40 | 11.3% | 14.6% | 63 | 18.4% | 15.3% | -23 | -7.1pp |
| Seniors (70 to 84) | 29 | 8.2% | 9.9% | 17 | 5.0% | 8.0% | +12 | +3.2pp |
| Elderly aged (85 and over) | 4 | 1.1% | 1.6% | 4 | 1.2% | 2.2% | 0 | -0.1pp |
| Total | 353 | 100.0% | 100.0% | 343 | 100.0% | 100.0% | +10 | 0.0pp |