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, 5 to 9 year olds was the largest age group among residents in Marian, accounting for 10.2% (431 people). This share was higher than Mackay (R) (6.8%). Since 2016, the biggest change was in 0 to 4 year olds, which decreased by 87 people and 2.8 percentage points.
Section overview
Age structure - Five year age groups
Marian - Total persons (Usual residence)
This table summarises five year age groups for Marian 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 Marian, with comparison markers for Mackay (R).
0 to 4
2021 count
336
% of total
8.0%
Change from 2016
-2.8pp
336
8.0%
-2.8pp
5 to 9
2021 count
431
% of total
10.2%
Change from 2016
+0.4pp
431
10.2%
+0.4pp
10 to 14
2021 count
369
% of total
8.7%
Change from 2016
+1.2pp
369
8.7%
+1.2pp
15 to 19
2021 count
257
% of total
6.1%
Change from 2016
0.0pp
257
6.1%
0.0pp
20 to 24
2021 count
236
% of total
5.6%
Change from 2016
+0.1pp
236
5.6%
+0.1pp
25 to 29
2021 count
296
% of total
7.0%
Change from 2016
-0.9pp
296
7.0%
-0.9pp
30 to 34
2021 count
334
% of total
7.9%
Change from 2016
-1.5pp
334
7.9%
-1.5pp
35 to 39
2021 count
364
% of total
8.6%
Change from 2016
+0.4pp
364
8.6%
+0.4pp
40 to 44
2021 count
322
% of total
7.6%
Change from 2016
+0.6pp
322
7.6%
+0.6pp
45 to 49
2021 count
284
% of total
6.7%
Change from 2016
-0.2pp
284
6.7%
-0.2pp
50 to 54
2021 count
268
% of total
6.3%
Change from 2016
+0.9pp
268
6.3%
+0.9pp
55 to 59
2021 count
211
% of total
5.0%
Change from 2016
+0.2pp
211
5.0%
+0.2pp
60 to 64
2021 count
193
% of total
4.6%
Change from 2016
+1.1pp
193
4.6%
+1.1pp
65 to 69
2021 count
130
% of total
3.1%
Change from 2016
+0.6pp
130
3.1%
+0.6pp
70 to 74
2021 count
83
% of total
2.0%
Change from 2016
+0.2pp
83
2.0%
+0.2pp
75 to 79
2021 count
47
% of total
1.1%
Change from 2016
-0.5pp
47
1.1%
-0.5pp
80 to 84
2021 count
43
% of total
1.0%
Change from 2016
+0.4pp
43
1.0%
+0.4pp
85 and over
2021 count
14
% of total
0.3%
Change from 2016
-0.1pp
14
0.3%
-0.1pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-87
-2.8pp
5 to 9
+50
+0.4pp
10 to 14
+78
+1.2pp
15 to 19
+17
0.0pp
20 to 24
+22
+0.1pp
25 to 29
-11
-0.9pp
30 to 34
-31
-1.5pp
35 to 39
+44
+0.4pp
40 to 44
+48
+0.6pp
45 to 49
+13
-0.2pp
50 to 54
+57
+0.9pp
55 to 59
+25
+0.2pp
60 to 64
+56
+1.1pp
65 to 69
+32
+0.6pp
70 to 74
+14
+0.2pp
75 to 79
-16
-0.5pp
80 to 84
+20
+0.4pp
85 and over
-1
-0.1pp
Data table
Five year age groups for Marian. 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 | 336 | 8.0% | 6.2% | 423 | 10.8% | 6.7% | -87 | -2.8pp |
| 5 to 9 | 431 | 10.2% | 6.8% | 381 | 9.8% | 7.1% | +50 | +0.4pp |
| 10 to 14 | 369 | 8.7% | 7.2% | 291 | 7.5% | 6.8% | +78 | +1.2pp |
| 15 to 19 | 257 | 6.1% | 6.1% | 240 | 6.1% | 6.3% | +17 | 0.0pp |
| 20 to 24 | 236 | 5.6% | 5.7% | 214 | 5.5% | 5.8% | +22 | +0.1pp |
| 25 to 29 | 296 | 7.0% | 6.3% | 307 | 7.9% | 6.5% | -11 | -0.9pp |
| 30 to 34 | 334 | 7.9% | 6.5% | 365 | 9.4% | 7.0% | -31 | -1.5pp |
| 35 to 39 | 364 | 8.6% | 7.0% | 320 | 8.2% | 6.4% | +44 | +0.4pp |
| 40 to 44 | 322 | 7.6% | 6.3% | 274 | 7.0% | 6.9% | +48 | +0.6pp |
| 45 to 49 | 284 | 6.7% | 6.6% | 271 | 6.9% | 7.4% | +13 | -0.2pp |
| 50 to 54 | 268 | 6.3% | 6.9% | 211 | 5.4% | 7.4% | +57 | +0.9pp |
| 55 to 59 | 211 | 5.0% | 6.9% | 186 | 4.8% | 6.9% | +25 | +0.2pp |
| 60 to 64 | 193 | 4.6% | 6.3% | 137 | 3.5% | 5.6% | +56 | +1.1pp |
| 65 to 69 | 130 | 3.1% | 5.1% | 98 | 2.5% | 4.5% | +32 | +0.6pp |
| 70 to 74 | 83 | 2.0% | 4.0% | 69 | 1.8% | 3.3% | +14 | +0.2pp |
| 75 to 79 | 47 | 1.1% | 2.8% | 63 | 1.6% | 2.3% | -16 | -0.5pp |
| 80 to 84 | 43 | 1.0% | 1.7% | 23 | 0.6% | 1.6% | +20 | +0.4pp |
| 85 and over | 14 | 0.3% | 1.6% | 15 | 0.4% | 1.4% | -1 | -0.1pp |
| Total | 4,224 | 100.0% | 100.0% | 3,903 | 100.0% | 100.0% | +321 | 0.0pp |