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 Coolongolook, accounting for 20.9% (80 people). This share was higher than Mid-Coast (A) (17.9%). Since 2016, the biggest change was in Seniors (70 to 84), which increased by 35 people and 9.4 percentage points.
Section overview
Age structure - Service age groups
Coolongolook - Total persons (Usual residence)
This table summarises service age groups for Coolongolook 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 Coolongolook, with comparison markers for Mid-Coast (A).
Babies and pre-schoolers (0 to 4)
2021 count
9
% of total
2.4%
Change from 2016
-3.5pp
9
2.4%
-3.5pp
Primary schoolers (5 to 11)
2021 count
25
% of total
6.5%
Change from 2016
-1.4pp
25
6.5%
-1.4pp
Secondary schoolers (12 to 17)
2021 count
21
% of total
5.5%
Change from 2016
-0.1pp
21
5.5%
-0.1pp
Tertiary education and independence (18 to 24)
2021 count
13
% of total
3.4%
Change from 2016
-4.3pp
13
3.4%
-4.3pp
Young workforce (25 to 34)
2021 count
31
% of total
8.1%
Change from 2016
+2.0pp
31
8.1%
+2.0pp
Parents and homebuilders (35 to 49)
2021 count
43
% of total
11.3%
Change from 2016
-3.0pp
43
11.3%
-3.0pp
Older workers and pre-retirees (50 to 59)
2021 count
59
% of total
15.4%
Change from 2016
-4.5pp
59
15.4%
-4.5pp
Empty nesters and retirees (60 to 69)
2021 count
80
% of total
20.9%
Change from 2016
+1.3pp
80
20.9%
+1.3pp
Seniors (70 to 84)
2021 count
71
% of total
18.6%
Change from 2016
+9.4pp
71
18.6%
+9.4pp
Elderly aged (85 and over)
2021 count
12
% of total
3.1%
Change from 2016
+2.3pp
12
3.1%
+2.3pp
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
-3.5pp
Primary schoolers (5 to 11)
-6
-1.4pp
Secondary schoolers (12 to 17)
-1
-0.1pp
Tertiary education and independence (18 to 24)
-17
-4.3pp
Young workforce (25 to 34)
+7
+2.0pp
Parents and homebuilders (35 to 49)
-13
-3.0pp
Older workers and pre-retirees (50 to 59)
-19
-4.5pp
Empty nesters and retirees (60 to 69)
+3
+1.3pp
Seniors (70 to 84)
+35
+9.4pp
Elderly aged (85 and over)
+9
+2.3pp
Data table
Service age groups for Coolongolook. 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) | 9 | 2.4% | 4.1% | 23 | 5.9% | 4.6% | -14 | -3.5pp |
| Primary schoolers (5 to 11) | 25 | 6.5% | 7.1% | 31 | 7.9% | 7.6% | -6 | -1.4pp |
| Secondary schoolers (12 to 17) | 21 | 5.5% | 6.5% | 22 | 5.6% | 6.8% | -1 | -0.1pp |
| Tertiary education and independence (18 to 24) | 13 | 3.4% | 5.3% | 30 | 7.7% | 5.6% | -17 | -4.3pp |
| Young workforce (25 to 34) | 31 | 8.1% | 7.9% | 24 | 6.1% | 7.4% | +7 | +2.0pp |
| Parents and homebuilders (35 to 49) | 43 | 11.3% | 14.0% | 56 | 14.3% | 15.0% | -13 | -3.0pp |
| Older workers and pre-retirees (50 to 59) | 59 | 15.4% | 13.2% | 78 | 19.9% | 14.5% | -19 | -4.5pp |
| Empty nesters and retirees (60 to 69) | 80 | 20.9% | 17.9% | 77 | 19.6% | 17.7% | +3 | +1.3pp |
| Seniors (70 to 84) | 71 | 18.6% | 20.1% | 36 | 9.2% | 17.0% | +35 | +9.4pp |
| Elderly aged (85 and over) | 12 | 3.1% | 4.0% | 3 | 0.8% | 3.8% | +9 | +2.3pp |
| Total | 382 | 100.0% | 100.0% | 392 | 100.0% | 100.0% | -10 | 0.0pp |