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, 50 to 54 year olds was the largest age group among residents in Cecil Park (part), accounting for 8.3% (68 people). This share was higher than Fairfield (C) (6.7%). Since 2016, the biggest change was in 10 to 14 year olds, which decreased by 580 people and 3.8 percentage points.
Section overview
Age structure - Five year age groups
Cecil Park (part) - Total persons (Usual residence)
This table summarises five year age groups for Cecil Park (part) in 2021 for persons, with comparison against Fairfield (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Cecil Park (part), with comparison markers for Fairfield (C).
0 to 4
2021 count
38
% of total
4.7%
Change from 2016
-0.3pp
38
4.7%
-0.3pp
5 to 9
2021 count
40
% of total
4.9%
Change from 2016
-1.7pp
40
4.9%
-1.7pp
10 to 14
2021 count
41
% of total
5.0%
Change from 2016
-3.8pp
41
5.0%
-3.8pp
15 to 19
2021 count
58
% of total
7.1%
Change from 2016
-1.9pp
58
7.1%
-1.9pp
20 to 24
2021 count
57
% of total
7.0%
Change from 2016
-1.2pp
57
7.0%
-1.2pp
25 to 29
2021 count
46
% of total
5.6%
Change from 2016
-0.8pp
46
5.6%
-0.8pp
30 to 34
2021 count
39
% of total
4.8%
Change from 2016
-0.7pp
39
4.8%
-0.7pp
35 to 39
2021 count
30
% of total
3.7%
Change from 2016
-1.6pp
30
3.7%
-1.6pp
40 to 44
2021 count
48
% of total
5.9%
Change from 2016
-2.0pp
48
5.9%
-2.0pp
45 to 49
2021 count
54
% of total
6.6%
Change from 2016
-1.4pp
54
6.6%
-1.4pp
50 to 54
2021 count
68
% of total
8.3%
Change from 2016
-0.2pp
68
8.3%
-0.2pp
55 to 59
2021 count
63
% of total
7.7%
Change from 2016
+0.8pp
63
7.7%
+0.8pp
60 to 64
2021 count
36
% of total
4.4%
Change from 2016
-0.9pp
36
4.4%
-0.9pp
65 to 69
2021 count
56
% of total
6.9%
Change from 2016
+3.2pp
56
6.9%
+3.2pp
70 to 74
2021 count
51
% of total
6.3%
Change from 2016
+4.1pp
51
6.3%
+4.1pp
75 to 79
2021 count
29
% of total
3.6%
Change from 2016
+2.2pp
29
3.6%
+2.2pp
80 to 84
2021 count
13
% of total
1.6%
Change from 2016
+0.8pp
13
1.6%
+0.8pp
85 and over
2021 count
20
% of total
2.5%
Change from 2016
+2.1pp
20
2.5%
+2.1pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-316
-0.3pp
5 to 9
-424
-1.7pp
10 to 14
-580
-3.8pp
15 to 19
-576
-1.9pp
20 to 24
-516
-1.2pp
25 to 29
-406
-0.8pp
30 to 34
-349
-0.7pp
35 to 39
-341
-1.6pp
40 to 44
-508
-2.0pp
45 to 49
-505
-1.4pp
50 to 54
-528
-0.2pp
55 to 59
-421
+0.8pp
60 to 64
-336
-0.9pp
65 to 69
-207
+3.2pp
70 to 74
-101
+4.1pp
75 to 79
-71
+2.2pp
80 to 84
-42
+0.8pp
85 and over
-8
+2.1pp
Data table
Five year age groups for Cecil Park (part). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Fairfield (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Fairfield (C)% | Count | % | Fairfield (C)% | Count | pp | |
| 0 to 4 | 38 | 4.7% | 5.2% | 354 | 5.0% | 6.1% | -316 | -0.3pp |
| 5 to 9 | 40 | 4.9% | 6.1% | 464 | 6.6% | 6.4% | -424 | -1.7pp |
| 10 to 14 | 41 | 5.0% | 6.6% | 621 | 8.8% | 6.6% | -580 | -3.8pp |
| 15 to 19 | 58 | 7.1% | 6.9% | 634 | 9.0% | 7.1% | -576 | -1.9pp |
| 20 to 24 | 57 | 7.0% | 7.0% | 573 | 8.2% | 7.7% | -516 | -1.2pp |
| 25 to 29 | 46 | 5.6% | 6.8% | 452 | 6.4% | 7.1% | -406 | -0.8pp |
| 30 to 34 | 39 | 4.8% | 6.2% | 388 | 5.5% | 6.6% | -349 | -0.7pp |
| 35 to 39 | 30 | 3.7% | 6.1% | 371 | 5.3% | 6.0% | -341 | -1.6pp |
| 40 to 44 | 48 | 5.9% | 5.9% | 556 | 7.9% | 6.4% | -508 | -2.0pp |
| 45 to 49 | 54 | 6.6% | 6.4% | 559 | 8.0% | 6.8% | -505 | -1.4pp |
| 50 to 54 | 68 | 8.3% | 6.7% | 596 | 8.5% | 6.8% | -528 | -0.2pp |
| 55 to 59 | 63 | 7.7% | 6.8% | 484 | 6.9% | 6.8% | -421 | +0.8pp |
| 60 to 64 | 36 | 4.4% | 6.6% | 372 | 5.3% | 5.7% | -336 | -0.9pp |
| 65 to 69 | 56 | 6.9% | 5.5% | 263 | 3.7% | 4.6% | -207 | +3.2pp |
| 70 to 74 | 51 | 6.3% | 4.3% | 152 | 2.2% | 3.1% | -101 | +4.1pp |
| 75 to 79 | 29 | 3.6% | 2.8% | 100 | 1.4% | 2.5% | -71 | +2.2pp |
| 80 to 84 | 13 | 1.6% | 2.1% | 55 | 0.8% | 1.8% | -42 | +0.8pp |
| 85 and over | 20 | 2.5% | 2.1% | 28 | 0.4% | 1.8% | -8 | +2.1pp |
| Total | 815 | 100.0% | 100.0% | 7,018 | 100.0% | 100.0% | -6,203 | 0.0pp |