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, 25 to 29 year olds was the largest age group among residents in Hackham, accounting for 7.1% (319 people). This share was higher than Onkaparinga (C) (6%). Since 2016, the biggest change was in 75 to 79 year olds, which increased by 101 people and 1.9 percentage points.
Section overview
Age structure - Five year age groups
Hackham - Total persons (Usual residence)
This table summarises five year age groups for Hackham in 2021 for persons, with comparison against Onkaparinga (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Hackham, with comparison markers for Onkaparinga (C).
0 to 4
2021 count
268
% of total
6.0%
Change from 2016
+0.2pp
268
6.0%
+0.2pp
5 to 9
2021 count
257
% of total
5.7%
Change from 2016
-0.4pp
257
5.7%
-0.4pp
10 to 14
2021 count
247
% of total
5.5%
Change from 2016
+0.2pp
247
5.5%
+0.2pp
15 to 19
2021 count
237
% of total
5.3%
Change from 2016
-0.4pp
237
5.3%
-0.4pp
20 to 24
2021 count
262
% of total
5.8%
Change from 2016
+0.6pp
262
5.8%
+0.6pp
25 to 29
2021 count
319
% of total
7.1%
Change from 2016
+0.7pp
319
7.1%
+0.7pp
30 to 34
2021 count
297
% of total
6.6%
Change from 2016
-0.1pp
297
6.6%
-0.1pp
35 to 39
2021 count
311
% of total
6.9%
Change from 2016
+0.8pp
311
6.9%
+0.8pp
40 to 44
2021 count
262
% of total
5.8%
Change from 2016
+0.1pp
262
5.8%
+0.1pp
45 to 49
2021 count
249
% of total
5.5%
Change from 2016
-0.4pp
249
5.5%
-0.4pp
50 to 54
2021 count
253
% of total
5.6%
Change from 2016
+0.4pp
253
5.6%
+0.4pp
55 to 59
2021 count
223
% of total
5.0%
Change from 2016
-1.3pp
223
5.0%
-1.3pp
60 to 64
2021 count
254
% of total
5.7%
Change from 2016
-1.0pp
254
5.7%
-1.0pp
65 to 69
2021 count
266
% of total
5.9%
Change from 2016
-1.2pp
266
5.9%
-1.2pp
70 to 74
2021 count
293
% of total
6.5%
Change from 2016
+1.3pp
293
6.5%
+1.3pp
75 to 79
2021 count
225
% of total
5.0%
Change from 2016
+1.9pp
225
5.0%
+1.9pp
80 to 84
2021 count
117
% of total
2.6%
Change from 2016
-0.1pp
117
2.6%
-0.1pp
85 and over
2021 count
138
% of total
3.1%
Change from 2016
-0.8pp
138
3.1%
-0.8pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+35
+0.2pp
5 to 9
+11
-0.4pp
10 to 14
+34
+0.2pp
15 to 19
+9
-0.4pp
20 to 24
+53
+0.6pp
25 to 29
+62
+0.7pp
30 to 34
+27
-0.1pp
35 to 39
+67
+0.8pp
40 to 44
+32
+0.1pp
45 to 49
+12
-0.4pp
50 to 54
+43
+0.4pp
55 to 59
-28
-1.3pp
60 to 64
-16
-1.0pp
65 to 69
-20
-1.2pp
70 to 74
+84
+1.3pp
75 to 79
+101
+1.9pp
80 to 84
+8
-0.1pp
85 and over
-20
-0.8pp
Data table
Five year age groups for Hackham. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Onkaparinga (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Onkaparinga (C)% | Count | % | Onkaparinga (C)% | Count | pp | |
| 0 to 4 | 268 | 6.0% | 5.4% | 233 | 5.8% | 6.2% | +35 | +0.2pp |
| 5 to 9 | 257 | 5.7% | 6.2% | 246 | 6.1% | 6.4% | +11 | -0.4pp |
| 10 to 14 | 247 | 5.5% | 6.2% | 213 | 5.3% | 6.1% | +34 | +0.2pp |
| 15 to 19 | 237 | 5.3% | 5.8% | 228 | 5.7% | 6.2% | +9 | -0.4pp |
| 20 to 24 | 262 | 5.8% | 5.6% | 209 | 5.2% | 6.0% | +53 | +0.6pp |
| 25 to 29 | 319 | 7.1% | 6.0% | 257 | 6.4% | 5.9% | +62 | +0.7pp |
| 30 to 34 | 297 | 6.6% | 6.3% | 270 | 6.7% | 6.5% | +27 | -0.1pp |
| 35 to 39 | 311 | 6.9% | 6.7% | 244 | 6.1% | 6.3% | +67 | +0.8pp |
| 40 to 44 | 262 | 5.8% | 6.1% | 230 | 5.7% | 6.6% | +32 | +0.1pp |
| 45 to 49 | 249 | 5.5% | 6.4% | 237 | 5.9% | 6.9% | +12 | -0.4pp |
| 50 to 54 | 253 | 5.6% | 6.6% | 210 | 5.2% | 6.7% | +43 | +0.4pp |
| 55 to 59 | 223 | 5.0% | 6.5% | 251 | 6.3% | 6.6% | -28 | -1.3pp |
| 60 to 64 | 254 | 5.7% | 6.3% | 270 | 6.7% | 6.3% | -16 | -1.0pp |
| 65 to 69 | 266 | 5.9% | 5.9% | 286 | 7.1% | 6.1% | -20 | -1.2pp |
| 70 to 74 | 293 | 6.5% | 5.7% | 209 | 5.2% | 4.3% | +84 | +1.3pp |
| 75 to 79 | 225 | 5.0% | 3.8% | 124 | 3.1% | 2.8% | +101 | +1.9pp |
| 80 to 84 | 117 | 2.6% | 2.3% | 109 | 2.7% | 2.0% | +8 | -0.1pp |
| 85 and over | 138 | 3.1% | 2.2% | 158 | 3.9% | 2.1% | -20 | -0.8pp |
| Total | 4,491 | 100.0% | 100.0% | 4,009 | 100.0% | 100.0% | +482 | 0.0pp |