Population
Five year age groups
About this topic
Five year age groups show the population in standard five-year cohorts from early childhood through older age. Because each band covers the same span of years, the topic gives a clear and comparable view of an area's age structure.
This topic is useful for identifying growth or decline in specific cohorts and for comparing age patterns across places and over time. For service planning, it is often read together with service age groups, household types, and dwelling types.
Interpretation notes
- Age is reported as at Census night, so the counts are a snapshot of the resident age structure at that point in time.
- Because each band covers the same five-year span, this topic is best for exact cohort comparison rather than service-planning life stages.
Related topics
Key insight
In 2021, 55 to 59 year olds was the largest age group among residents in Dolphin Heads, accounting for 12.1% (50 people). This share was higher than Mackay (R) (6.9%). Since 2016, the biggest change was in 65 to 69 year olds, which increased by 17 people and 3.7 percentage points.
Section overview
Age structure - Five year age groups
Dolphin Heads - Total persons (Usual residence)
This table summarises five year age groups for Dolphin Heads in 2021 for persons, with comparison against Mackay (R) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Dolphin Heads, with comparison markers for Mackay (R).
0 to 4
2021 count
12
% of total
2.9%
Change from 2016
+1.4pp
12
2.9%
+1.4pp
5 to 9
2021 count
20
% of total
4.8%
Change from 2016
-0.6pp
20
4.8%
-0.6pp
10 to 14
2021 count
37
% of total
9.0%
Change from 2016
+2.6pp
37
9.0%
+2.6pp
15 to 19
2021 count
26
% of total
6.3%
Change from 2016
-0.1pp
26
6.3%
-0.1pp
20 to 24
2021 count
9
% of total
2.2%
Change from 2016
-0.9pp
9
2.2%
-0.9pp
25 to 29
2021 count
8
% of total
1.9%
Change from 2016
-1.2pp
8
1.9%
-1.2pp
30 to 34
2021 count
12
% of total
2.9%
Change from 2016
-1.5pp
12
2.9%
-1.5pp
35 to 39
2021 count
28
% of total
6.8%
Change from 2016
+3.2pp
28
6.8%
+3.2pp
40 to 44
2021 count
31
% of total
7.5%
Change from 2016
-0.5pp
31
7.5%
-0.5pp
45 to 49
2021 count
29
% of total
7.0%
Change from 2016
-4.9pp
29
7.0%
-4.9pp
50 to 54
2021 count
40
% of total
9.7%
Change from 2016
-3.2pp
40
9.7%
-3.2pp
55 to 59
2021 count
50
% of total
12.1%
Change from 2016
-0.5pp
50
12.1%
-0.5pp
60 to 64
2021 count
34
% of total
8.2%
Change from 2016
-0.6pp
34
8.2%
-0.6pp
65 to 69
2021 count
43
% of total
10.4%
Change from 2016
+3.7pp
43
10.4%
+3.7pp
70 to 74
2021 count
14
% of total
3.4%
Change from 2016
+1.1pp
14
3.4%
+1.1pp
75 to 79
2021 count
10
% of total
2.4%
Change from 2016
+1.6pp
10
2.4%
+1.6pp
80 to 84
2021 count
3
% of total
0.7%
Change from 2016
+0.7pp
3
0.7%
+0.7pp
85 and over
2021 count
6
% of total
1.5%
Change from 2016
+1.5pp
6
1.5%
+1.5pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+6
+1.4pp
5 to 9
-1
-0.6pp
10 to 14
+12
+2.6pp
15 to 19
+1
-0.1pp
20 to 24
-3
-0.9pp
25 to 29
-4
-1.2pp
30 to 34
-5
-1.5pp
35 to 39
+14
+3.2pp
40 to 44
0
-0.5pp
45 to 49
-17
-4.9pp
50 to 54
-10
-3.2pp
55 to 59
+1
-0.5pp
60 to 64
0
-0.6pp
65 to 69
+17
+3.7pp
70 to 74
+5
+1.1pp
75 to 79
+7
+1.6pp
80 to 84
+3
+0.7pp
85 and over
+6
+1.5pp
Data table
Five year age groups for Dolphin Heads. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Mackay (R).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Mackay (R)% | Count | % | Mackay (R)% | Count | pp | |
| 0 to 4 | 12 | 2.9% | 6.2% | 6 | 1.5% | 6.7% | +6 | +1.4pp |
| 5 to 9 | 20 | 4.8% | 6.8% | 21 | 5.4% | 7.1% | -1 | -0.6pp |
| 10 to 14 | 37 | 9.0% | 7.2% | 25 | 6.4% | 6.8% | +12 | +2.6pp |
| 15 to 19 | 26 | 6.3% | 6.1% | 25 | 6.4% | 6.3% | +1 | -0.1pp |
| 20 to 24 | 9 | 2.2% | 5.7% | 12 | 3.1% | 5.8% | -3 | -0.9pp |
| 25 to 29 | 8 | 1.9% | 6.3% | 12 | 3.1% | 6.5% | -4 | -1.2pp |
| 30 to 34 | 12 | 2.9% | 6.5% | 17 | 4.4% | 7.0% | -5 | -1.5pp |
| 35 to 39 | 28 | 6.8% | 7.0% | 14 | 3.6% | 6.4% | +14 | +3.2pp |
| 40 to 44 | 31 | 7.5% | 6.3% | 31 | 8.0% | 6.9% | 0 | -0.5pp |
| 45 to 49 | 29 | 7.0% | 6.6% | 46 | 11.9% | 7.4% | -17 | -4.9pp |
| 50 to 54 | 40 | 9.7% | 6.9% | 50 | 12.9% | 7.4% | -10 | -3.2pp |
| 55 to 59 | 50 | 12.1% | 6.9% | 49 | 12.6% | 6.9% | +1 | -0.5pp |
| 60 to 64 | 34 | 8.2% | 6.3% | 34 | 8.8% | 5.6% | 0 | -0.6pp |
| 65 to 69 | 43 | 10.4% | 5.1% | 26 | 6.7% | 4.5% | +17 | +3.7pp |
| 70 to 74 | 14 | 3.4% | 4.0% | 9 | 2.3% | 3.3% | +5 | +1.1pp |
| 75 to 79 | 10 | 2.4% | 2.8% | 3 | 0.8% | 2.3% | +7 | +1.6pp |
| 80 to 84 | 3 | 0.7% | 1.7% | 0 | 0.0% | 1.6% | +3 | +0.7pp |
| 85 and over | 6 | 1.5% | 1.6% | 0 | 0.0% | 1.4% | +6 | +1.5pp |
| Total | 413 | 100.0% | 100.0% | 388 | 100.0% | 100.0% | +25 | 0.0pp |