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, 35 to 39 year olds was the largest age group among residents in Colebee, accounting for 10.9% (534 people). This share was higher than Blacktown (C) (9.2%). Since 2016, the biggest change was in 35 to 39 year olds, which increased by 335 people and 0.6 percentage points.
Section overview
Age structure - Five year age groups
Colebee - Total persons (Usual residence)
This table summarises five year age groups for Colebee in 2021 for persons, with comparison against Blacktown (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Colebee, with comparison markers for Blacktown (C).
0 to 4
2021 count
442
% of total
9.0%
Change from 2016
-0.5pp
442
9.0%
-0.5pp
5 to 9
2021 count
462
% of total
9.4%
Change from 2016
+0.5pp
462
9.4%
+0.5pp
10 to 14
2021 count
396
% of total
8.1%
Change from 2016
+1.2pp
396
8.1%
+1.2pp
15 to 19
2021 count
327
% of total
6.7%
Change from 2016
-0.3pp
327
6.7%
-0.3pp
20 to 24
2021 count
315
% of total
6.4%
Change from 2016
+1.3pp
315
6.4%
+1.3pp
25 to 29
2021 count
254
% of total
5.2%
Change from 2016
-3.8pp
254
5.2%
-3.8pp
30 to 34
2021 count
432
% of total
8.8%
Change from 2016
-0.5pp
432
8.8%
-0.5pp
35 to 39
2021 count
534
% of total
10.9%
Change from 2016
+0.6pp
534
10.9%
+0.6pp
40 to 44
2021 count
444
% of total
9.0%
Change from 2016
-0.9pp
444
9.0%
-0.9pp
45 to 49
2021 count
359
% of total
7.3%
Change from 2016
0.0pp
359
7.3%
0.0pp
50 to 54
2021 count
282
% of total
5.7%
Change from 2016
-0.3pp
282
5.7%
-0.3pp
55 to 59
2021 count
230
% of total
4.7%
Change from 2016
+0.3pp
230
4.7%
+0.3pp
60 to 64
2021 count
192
% of total
3.9%
Change from 2016
+1.3pp
192
3.9%
+1.3pp
65 to 69
2021 count
103
% of total
2.1%
Change from 2016
-1.0pp
103
2.1%
-1.0pp
70 to 74
2021 count
89
% of total
1.8%
Change from 2016
+0.8pp
89
1.8%
+0.8pp
75 to 79
2021 count
39
% of total
0.8%
Change from 2016
+0.5pp
39
0.8%
+0.5pp
80 to 84
2021 count
16
% of total
0.3%
Change from 2016
+0.1pp
16
0.3%
+0.1pp
85 and over
2021 count
18
% of total
0.4%
Change from 2016
+0.2pp
18
0.4%
+0.2pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+258
-0.5pp
5 to 9
+291
+0.5pp
10 to 14
+263
+1.2pp
15 to 19
+192
-0.3pp
20 to 24
+217
+1.3pp
25 to 29
+81
-3.8pp
30 to 34
+253
-0.5pp
35 to 39
+335
+0.6pp
40 to 44
+253
-0.9pp
45 to 49
+219
0.0pp
50 to 54
+167
-0.3pp
55 to 59
+146
+0.3pp
60 to 64
+142
+1.3pp
65 to 69
+44
-1.0pp
70 to 74
+69
+0.8pp
75 to 79
+33
+0.5pp
80 to 84
+13
+0.1pp
85 and over
+15
+0.2pp
Data table
Five year age groups for Colebee. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Blacktown (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Blacktown (C)% | Count | % | Blacktown (C)% | Count | pp | |
| 0 to 4 | 442 | 9.0% | 7.5% | 184 | 9.5% | 8.0% | +258 | -0.5pp |
| 5 to 9 | 462 | 9.4% | 7.9% | 171 | 8.9% | 7.9% | +291 | +0.5pp |
| 10 to 14 | 396 | 8.1% | 7.3% | 133 | 6.9% | 6.9% | +263 | +1.2pp |
| 15 to 19 | 327 | 6.7% | 6.1% | 135 | 7.0% | 6.9% | +192 | -0.3pp |
| 20 to 24 | 315 | 6.4% | 6.7% | 98 | 5.1% | 6.8% | +217 | +1.3pp |
| 25 to 29 | 254 | 5.2% | 7.0% | 173 | 9.0% | 7.2% | +81 | -3.8pp |
| 30 to 34 | 432 | 8.8% | 7.9% | 179 | 9.3% | 8.3% | +253 | -0.5pp |
| 35 to 39 | 534 | 10.9% | 9.2% | 199 | 10.3% | 8.1% | +335 | +0.6pp |
| 40 to 44 | 444 | 9.0% | 7.8% | 191 | 9.9% | 7.2% | +253 | -0.9pp |
| 45 to 49 | 359 | 7.3% | 6.4% | 140 | 7.3% | 6.5% | +219 | 0.0pp |
| 50 to 54 | 282 | 5.7% | 5.6% | 115 | 6.0% | 6.0% | +167 | -0.3pp |
| 55 to 59 | 230 | 4.7% | 5.1% | 84 | 4.4% | 5.4% | +146 | +0.3pp |
| 60 to 64 | 192 | 3.9% | 4.5% | 50 | 2.6% | 4.6% | +142 | +1.3pp |
| 65 to 69 | 103 | 2.1% | 3.7% | 59 | 3.1% | 3.8% | +44 | -1.0pp |
| 70 to 74 | 89 | 1.8% | 3.1% | 20 | 1.0% | 2.5% | +69 | +0.8pp |
| 75 to 79 | 39 | 0.8% | 1.9% | 6 | 0.3% | 1.7% | +33 | +0.5pp |
| 80 to 84 | 16 | 0.3% | 1.2% | 3 | 0.2% | 1.1% | +13 | +0.1pp |
| 85 and over | 18 | 0.4% | 1.1% | 3 | 0.2% | 1.1% | +15 | +0.2pp |
| Total | 4,914 | 100.0% | 100.0% | 1,931 | 100.0% | 100.0% | +2,983 | 0.0pp |