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, 10 to 14 year olds was the largest age group among residents in Light (RegC), accounting for 7.9% (1,246 people). This share was higher than Regional SA (6.1%). Since 2016, the biggest change was in 60 to 64 year olds, which increased by 209 people and 0.9 percentage points.
Section overview
Age structure - Five year age groups
Light (RegC) - Total persons (Usual residence)
This table summarises five year age groups for Light (RegC) in 2021 for persons, with comparison against Regional SA and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Light (RegC), with comparison markers for Regional SA.
0 to 4
2021 count
836
% of total
5.3%
Change from 2016
-0.7pp
836
5.3%
-0.7pp
5 to 9
2021 count
1,095
% of total
6.9%
Change from 2016
-0.9pp
1,095
6.9%
-0.9pp
10 to 14
2021 count
1,246
% of total
7.9%
Change from 2016
0.0pp
1,246
7.9%
0.0pp
15 to 19
2021 count
1,151
% of total
7.3%
Change from 2016
+0.1pp
1,151
7.3%
+0.1pp
20 to 24
2021 count
923
% of total
5.8%
Change from 2016
+0.3pp
923
5.8%
+0.3pp
25 to 29
2021 count
770
% of total
4.9%
Change from 2016
+0.3pp
770
4.9%
+0.3pp
30 to 34
2021 count
815
% of total
5.2%
Change from 2016
-0.4pp
815
5.2%
-0.4pp
35 to 39
2021 count
960
% of total
6.1%
Change from 2016
+0.2pp
960
6.1%
+0.2pp
40 to 44
2021 count
943
% of total
6.0%
Change from 2016
-1.4pp
943
6.0%
-1.4pp
45 to 49
2021 count
1,151
% of total
7.3%
Change from 2016
-0.4pp
1,151
7.3%
-0.4pp
50 to 54
2021 count
1,144
% of total
7.2%
Change from 2016
-0.9pp
1,144
7.2%
-0.9pp
55 to 59
2021 count
1,196
% of total
7.6%
Change from 2016
0.0pp
1,196
7.6%
0.0pp
60 to 64
2021 count
1,101
% of total
7.0%
Change from 2016
+0.9pp
1,101
7.0%
+0.9pp
65 to 69
2021 count
876
% of total
5.5%
Change from 2016
+0.7pp
876
5.5%
+0.7pp
70 to 74
2021 count
676
% of total
4.3%
Change from 2016
+0.8pp
676
4.3%
+0.8pp
75 to 79
2021 count
461
% of total
2.9%
Change from 2016
+0.9pp
461
2.9%
+0.9pp
80 to 84
2021 count
237
% of total
1.5%
Change from 2016
+0.1pp
237
1.5%
+0.1pp
85 and over
2021 count
209
% of total
1.3%
Change from 2016
+0.2pp
209
1.3%
+0.2pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-42
-0.7pp
5 to 9
-51
-0.9pp
10 to 14
+82
0.0pp
15 to 19
+86
+0.1pp
20 to 24
+118
+0.3pp
25 to 29
+88
+0.3pp
30 to 34
-12
-0.4pp
35 to 39
+86
+0.2pp
40 to 44
-151
-1.4pp
45 to 49
+16
-0.4pp
50 to 54
-48
-0.9pp
55 to 59
+79
0.0pp
60 to 64
+209
+0.9pp
65 to 69
+174
+0.7pp
70 to 74
+156
+0.8pp
75 to 79
+173
+0.9pp
80 to 84
+34
+0.1pp
85 and over
+52
+0.2pp
Data table
Five year age groups for Light (RegC). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Regional SA.
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Regional SA% | Count | % | Regional SA% | Count | pp | |
| 0 to 4 | 836 | 5.3% | 4.9% | 878 | 6.0% | 5.5% | -42 | -0.7pp |
| 5 to 9 | 1,095 | 6.9% | 5.7% | 1,146 | 7.8% | 6.1% | -51 | -0.9pp |
| 10 to 14 | 1,246 | 7.9% | 6.1% | 1,164 | 7.9% | 6.0% | +82 | 0.0pp |
| 15 to 19 | 1,151 | 7.3% | 5.3% | 1,065 | 7.2% | 5.6% | +86 | +0.1pp |
| 20 to 24 | 923 | 5.8% | 4.6% | 805 | 5.5% | 4.8% | +118 | +0.3pp |
| 25 to 29 | 770 | 4.9% | 5.1% | 682 | 4.6% | 5.1% | +88 | +0.3pp |
| 30 to 34 | 815 | 5.2% | 5.4% | 827 | 5.6% | 5.3% | -12 | -0.4pp |
| 35 to 39 | 960 | 6.1% | 5.4% | 874 | 5.9% | 5.2% | +86 | +0.2pp |
| 40 to 44 | 943 | 6.0% | 5.2% | 1,094 | 7.4% | 5.9% | -151 | -1.4pp |
| 45 to 49 | 1,151 | 7.3% | 5.8% | 1,135 | 7.7% | 6.7% | +16 | -0.4pp |
| 50 to 54 | 1,144 | 7.2% | 6.7% | 1,192 | 8.1% | 7.1% | -48 | -0.9pp |
| 55 to 59 | 1,196 | 7.6% | 7.2% | 1,117 | 7.6% | 7.5% | +79 | 0.0pp |
| 60 to 64 | 1,101 | 7.0% | 7.7% | 892 | 6.1% | 7.3% | +209 | +0.9pp |
| 65 to 69 | 876 | 5.5% | 7.4% | 702 | 4.8% | 7.1% | +174 | +0.7pp |
| 70 to 74 | 676 | 4.3% | 6.8% | 520 | 3.5% | 5.5% | +156 | +0.8pp |
| 75 to 79 | 461 | 2.9% | 4.8% | 288 | 2.0% | 3.9% | +173 | +0.9pp |
| 80 to 84 | 237 | 1.5% | 3.1% | 203 | 1.4% | 2.6% | +34 | +0.1pp |
| 85 and over | 209 | 1.3% | 2.8% | 157 | 1.1% | 2.7% | +52 | +0.2pp |
| Total | 15,792 | 100.0% | 100.0% | 14,736 | 100.0% | 100.0% | +1,056 | 0.0pp |