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, 30 to 34 year olds was the largest age group among residents in Mitchell Park (SA), accounting for 9.1% (522 people). This share was higher than Marion (C) (7.7%). Since 2016, the biggest change was in 65 to 69 year olds, which increased by 85 people and 1.2 percentage points.
Section overview
Age structure - Five year age groups
Mitchell Park (SA) - Total persons (Usual residence)
This table summarises five year age groups for Mitchell Park (SA) in 2021 for persons, with comparison against Marion (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Mitchell Park (SA), with comparison markers for Marion (C).
0 to 4
2021 count
297
% of total
5.2%
Change from 2016
-0.7pp
297
5.2%
-0.7pp
5 to 9
2021 count
286
% of total
5.0%
Change from 2016
+0.2pp
286
5.0%
+0.2pp
10 to 14
2021 count
276
% of total
4.8%
Change from 2016
+0.7pp
276
4.8%
+0.7pp
15 to 19
2021 count
257
% of total
4.5%
Change from 2016
-1.4pp
257
4.5%
-1.4pp
20 to 24
2021 count
469
% of total
8.2%
Change from 2016
-0.2pp
469
8.2%
-0.2pp
25 to 29
2021 count
514
% of total
8.9%
Change from 2016
+0.3pp
514
8.9%
+0.3pp
30 to 34
2021 count
522
% of total
9.1%
Change from 2016
+0.4pp
522
9.1%
+0.4pp
35 to 39
2021 count
462
% of total
8.0%
Change from 2016
+0.9pp
462
8.0%
+0.9pp
40 to 44
2021 count
360
% of total
6.3%
Change from 2016
+0.5pp
360
6.3%
+0.5pp
45 to 49
2021 count
344
% of total
6.0%
Change from 2016
+0.7pp
344
6.0%
+0.7pp
50 to 54
2021 count
306
% of total
5.3%
Change from 2016
-0.2pp
306
5.3%
-0.2pp
55 to 59
2021 count
308
% of total
5.4%
Change from 2016
-0.6pp
308
5.4%
-0.6pp
60 to 64
2021 count
323
% of total
5.6%
Change from 2016
-0.4pp
323
5.6%
-0.4pp
65 to 69
2021 count
329
% of total
5.7%
Change from 2016
+1.2pp
329
5.7%
+1.2pp
70 to 74
2021 count
229
% of total
4.0%
Change from 2016
-0.3pp
229
4.0%
-0.3pp
75 to 79
2021 count
200
% of total
3.5%
Change from 2016
-0.5pp
200
3.5%
-0.5pp
80 to 84
2021 count
164
% of total
2.9%
Change from 2016
+0.2pp
164
2.9%
+0.2pp
85 and over
2021 count
133
% of total
2.3%
Change from 2016
-0.1pp
133
2.3%
-0.1pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-23
-0.7pp
5 to 9
+26
+0.2pp
10 to 14
+53
+0.7pp
15 to 19
-68
-1.4pp
20 to 24
+8
-0.2pp
25 to 29
+45
+0.3pp
30 to 34
+45
+0.4pp
35 to 39
+72
+0.9pp
40 to 44
+45
+0.5pp
45 to 49
+52
+0.7pp
50 to 54
+3
-0.2pp
55 to 59
-19
-0.6pp
60 to 64
-5
-0.4pp
65 to 69
+85
+1.2pp
70 to 74
-5
-0.3pp
75 to 79
-19
-0.5pp
80 to 84
+18
+0.2pp
85 and over
0
-0.1pp
Data table
Five year age groups for Mitchell Park (SA). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Marion (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Marion (C)% | Count | % | Marion (C)% | Count | pp | |
| 0 to 4 | 297 | 5.2% | 5.4% | 320 | 5.9% | 5.9% | -23 | -0.7pp |
| 5 to 9 | 286 | 5.0% | 5.6% | 260 | 4.8% | 5.4% | +26 | +0.2pp |
| 10 to 14 | 276 | 4.8% | 5.2% | 223 | 4.1% | 4.9% | +53 | +0.7pp |
| 15 to 19 | 257 | 4.5% | 5.1% | 325 | 5.9% | 5.7% | -68 | -1.4pp |
| 20 to 24 | 469 | 8.2% | 6.7% | 461 | 8.4% | 7.2% | +8 | -0.2pp |
| 25 to 29 | 514 | 8.9% | 7.4% | 469 | 8.6% | 7.3% | +45 | +0.3pp |
| 30 to 34 | 522 | 9.1% | 7.7% | 477 | 8.7% | 7.5% | +45 | +0.4pp |
| 35 to 39 | 462 | 8.0% | 7.5% | 390 | 7.1% | 6.8% | +72 | +0.9pp |
| 40 to 44 | 360 | 6.3% | 6.6% | 315 | 5.8% | 6.4% | +45 | +0.5pp |
| 45 to 49 | 344 | 6.0% | 6.1% | 292 | 5.3% | 6.3% | +52 | +0.7pp |
| 50 to 54 | 306 | 5.3% | 5.9% | 303 | 5.5% | 6.4% | +3 | -0.2pp |
| 55 to 59 | 308 | 5.4% | 5.9% | 327 | 6.0% | 6.6% | -19 | -0.6pp |
| 60 to 64 | 323 | 5.6% | 6.1% | 328 | 6.0% | 6.2% | -5 | -0.4pp |
| 65 to 69 | 329 | 5.7% | 5.7% | 244 | 4.5% | 5.2% | +85 | +1.2pp |
| 70 to 74 | 229 | 4.0% | 4.8% | 234 | 4.3% | 3.7% | -5 | -0.3pp |
| 75 to 79 | 200 | 3.5% | 3.3% | 219 | 4.0% | 2.9% | -19 | -0.5pp |
| 80 to 84 | 164 | 2.9% | 2.3% | 146 | 2.7% | 2.4% | +18 | +0.2pp |
| 85 and over | 133 | 2.3% | 2.9% | 133 | 2.4% | 3.1% | 0 | -0.1pp |
| Total | 5,754 | 100.0% | 100.0% | 5,465 | 100.0% | 100.0% | +289 | 0.0pp |