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 Black Head, accounting for 36.7% (357 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 114 people and 8.1 percentage points.
Section overview
Age structure - Service age groups
Black Head - Total persons (Usual residence)
This table summarises service age groups for Black Head 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 Black Head, with comparison markers for Mid-Coast (A).
Babies and pre-schoolers (0 to 4)
2021 count
23
% of total
2.4%
Change from 2016
0.0pp
23
2.4%
0.0pp
Primary schoolers (5 to 11)
2021 count
51
% of total
5.2%
Change from 2016
+1.1pp
51
5.2%
+1.1pp
Secondary schoolers (12 to 17)
2021 count
59
% of total
6.1%
Change from 2016
+1.8pp
59
6.1%
+1.8pp
Tertiary education and independence (18 to 24)
2021 count
30
% of total
3.1%
Change from 2016
-0.9pp
30
3.1%
-0.9pp
Young workforce (25 to 34)
2021 count
42
% of total
4.3%
Change from 2016
+0.7pp
42
4.3%
+0.7pp
Parents and homebuilders (35 to 49)
2021 count
95
% of total
9.8%
Change from 2016
-2.3pp
95
9.8%
-2.3pp
Older workers and pre-retirees (50 to 59)
2021 count
89
% of total
9.2%
Change from 2016
-3.1pp
89
9.2%
-3.1pp
Empty nesters and retirees (60 to 69)
2021 count
198
% of total
20.4%
Change from 2016
-1.9pp
198
20.4%
-1.9pp
Seniors (70 to 84)
2021 count
357
% of total
36.7%
Change from 2016
+8.1pp
357
36.7%
+8.1pp
Elderly aged (85 and over)
2021 count
42
% of total
4.3%
Change from 2016
+0.5pp
42
4.3%
+0.5pp
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
0.0pp
Primary schoolers (5 to 11)
+16
+1.1pp
Secondary schoolers (12 to 17)
+22
+1.8pp
Tertiary education and independence (18 to 24)
-4
-0.9pp
Young workforce (25 to 34)
+11
+0.7pp
Parents and homebuilders (35 to 49)
-8
-2.3pp
Older workers and pre-retirees (50 to 59)
-16
-3.1pp
Empty nesters and retirees (60 to 69)
+8
-1.9pp
Seniors (70 to 84)
+114
+8.1pp
Elderly aged (85 and over)
+10
+0.5pp
Data table
Service age groups for Black Head. 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) | 23 | 2.4% | 4.1% | 20 | 2.4% | 4.6% | +3 | 0.0pp |
| Primary schoolers (5 to 11) | 51 | 5.2% | 7.1% | 35 | 4.1% | 7.6% | +16 | +1.1pp |
| Secondary schoolers (12 to 17) | 59 | 6.1% | 6.5% | 37 | 4.3% | 6.8% | +22 | +1.8pp |
| Tertiary education and independence (18 to 24) | 30 | 3.1% | 5.3% | 34 | 4.0% | 5.6% | -4 | -0.9pp |
| Young workforce (25 to 34) | 42 | 4.3% | 7.9% | 31 | 3.6% | 7.4% | +11 | +0.7pp |
| Parents and homebuilders (35 to 49) | 95 | 9.8% | 14.0% | 103 | 12.1% | 15.0% | -8 | -2.3pp |
| Older workers and pre-retirees (50 to 59) | 89 | 9.2% | 13.2% | 105 | 12.3% | 14.5% | -16 | -3.1pp |
| Empty nesters and retirees (60 to 69) | 198 | 20.4% | 17.9% | 190 | 22.3% | 17.7% | +8 | -1.9pp |
| Seniors (70 to 84) | 357 | 36.7% | 20.1% | 243 | 28.6% | 17.0% | +114 | +8.1pp |
| Elderly aged (85 and over) | 42 | 4.3% | 4.0% | 32 | 3.8% | 3.8% | +10 | +0.5pp |
| Total | 972 | 100.0% | 100.0% | 851 | 100.0% | 100.0% | +121 | 0.0pp |