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, Seniors (70 to 84) was the most common category among residents in Killawarra (NSW), accounting for 24.7% (44 people). This share was higher than Mid-Coast (A) (20.1%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 17 people and 8.8 percentage points.
Section overview
Age structure - Service age groups
Killawarra (NSW) - Total persons (Usual residence)
This table summarises service age groups for Killawarra (NSW) in 2021 for persons, with comparison against Mid-Coast (A) and change since 2016.
Age structure - Service age groups snapshot
2021 distribution by category for Killawarra (NSW), with comparison markers for Mid-Coast (A).
Babies and pre-schoolers (0 to 4)
2021 count
0
% of total
0.0%
Change from 2016
-1.8pp
0
0.0%
-1.8pp
Primary schoolers (5 to 11)
2021 count
14
% of total
7.9%
Change from 2016
+3.8pp
14
7.9%
+3.8pp
Secondary schoolers (12 to 17)
2021 count
26
% of total
14.6%
Change from 2016
+8.7pp
26
14.6%
+8.7pp
Tertiary education and independence (18 to 24)
2021 count
8
% of total
4.5%
Change from 2016
+2.7pp
8
4.5%
+2.7pp
Young workforce (25 to 34)
2021 count
0
% of total
0.0%
Change from 2016
-1.8pp
0
0.0%
-1.8pp
Parents and homebuilders (35 to 49)
2021 count
21
% of total
11.8%
Change from 2016
-1.7pp
21
11.8%
-1.7pp
Older workers and pre-retirees (50 to 59)
2021 count
14
% of total
7.9%
Change from 2016
-6.8pp
14
7.9%
-6.8pp
Empty nesters and retirees (60 to 69)
2021 count
38
% of total
21.3%
Change from 2016
+1.3pp
38
21.3%
+1.3pp
Seniors (70 to 84)
2021 count
44
% of total
24.7%
Change from 2016
+8.8pp
44
24.7%
+8.8pp
Elderly aged (85 and over)
2021 count
3
% of total
1.7%
Change from 2016
+1.7pp
3
1.7%
+1.7pp
Chart view
Age structure - Service age groups change
Absolute change in category counts between 2016 and 2021.
Babies and pre-schoolers (0 to 4)
-3
-1.8pp
Primary schoolers (5 to 11)
+7
+3.8pp
Secondary schoolers (12 to 17)
+16
+8.7pp
Tertiary education and independence (18 to 24)
+5
+2.7pp
Young workforce (25 to 34)
-3
-1.8pp
Parents and homebuilders (35 to 49)
-2
-1.7pp
Older workers and pre-retirees (50 to 59)
-11
-6.8pp
Empty nesters and retirees (60 to 69)
+4
+1.3pp
Seniors (70 to 84)
+17
+8.8pp
Elderly aged (85 and over)
+3
+1.7pp
Data table
Service age groups for Killawarra (NSW). Age structure - Service age groups. 2021 and 2016 counts, percentages, and change compared with Mid-Coast (A).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Mid-Coast (A)% | Count | % | Mid-Coast (A)% | Count | pp | |
| Babies and pre-schoolers (0 to 4) | 0 | 0.0% | 4.1% | 3 | 1.8% | 4.6% | -3 | -1.8pp |
| Primary schoolers (5 to 11) | 14 | 7.9% | 7.1% | 7 | 4.1% | 7.6% | +7 | +3.8pp |
| Secondary schoolers (12 to 17) | 26 | 14.6% | 6.5% | 10 | 5.9% | 6.8% | +16 | +8.7pp |
| Tertiary education and independence (18 to 24) | 8 | 4.5% | 5.3% | 3 | 1.8% | 5.6% | +5 | +2.7pp |
| Young workforce (25 to 34) | 0 | 0.0% | 7.9% | 3 | 1.8% | 7.4% | -3 | -1.8pp |
| Parents and homebuilders (35 to 49) | 21 | 11.8% | 14.0% | 23 | 13.5% | 15.0% | -2 | -1.7pp |
| Older workers and pre-retirees (50 to 59) | 14 | 7.9% | 13.2% | 25 | 14.7% | 14.5% | -11 | -6.8pp |
| Empty nesters and retirees (60 to 69) | 38 | 21.3% | 17.9% | 34 | 20.0% | 17.7% | +4 | +1.3pp |
| Seniors (70 to 84) | 44 | 24.7% | 20.1% | 27 | 15.9% | 17.0% | +17 | +8.8pp |
| Elderly aged (85 and over) | 3 | 1.7% | 4.0% | 0 | 0.0% | 3.8% | +3 | +1.7pp |
| Total | 178 | 100.0% | 100.0% | 170 | 100.0% | 100.0% | +8 | 0.0pp |