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, 10 to 14 year olds was the largest age group among residents in Whalan, accounting for 8.6% (509 people). This share was higher than Blacktown (C) (7.3%). Since 2016, the biggest change was in 10 to 14 year olds, which increased by 493 people, while its share fell by 3.6 percentage points.
Section overview
Age structure - Five year age groups
Whalan - Total persons (Usual residence)
This table summarises five year age groups for Whalan 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 Whalan, with comparison markers for Blacktown (C).
0 to 4
2021 count
452
% of total
7.6%
Change from 2016
+0.7pp
452
7.6%
+0.7pp
5 to 9
2021 count
478
% of total
8.1%
Change from 2016
+1.2pp
478
8.1%
+1.2pp
10 to 14
2021 count
509
% of total
8.6%
Change from 2016
-3.6pp
509
8.6%
-3.6pp
15 to 19
2021 count
457
% of total
7.7%
Change from 2016
+3.1pp
457
7.7%
+3.1pp
20 to 24
2021 count
360
% of total
6.1%
Change from 2016
+6.1pp
360
6.1%
+6.1pp
25 to 29
2021 count
367
% of total
6.2%
Change from 2016
+1.6pp
367
6.2%
+1.6pp
30 to 34
2021 count
363
% of total
6.1%
Change from 2016
+6.1pp
363
6.1%
+6.1pp
35 to 39
2021 count
374
% of total
6.3%
Change from 2016
-0.6pp
374
6.3%
-0.6pp
40 to 44
2021 count
364
% of total
6.1%
Change from 2016
+1.5pp
364
6.1%
+1.5pp
45 to 49
2021 count
335
% of total
5.7%
Change from 2016
+3.4pp
335
5.7%
+3.4pp
50 to 54
2021 count
341
% of total
5.8%
Change from 2016
+1.2pp
341
5.8%
+1.2pp
55 to 59
2021 count
366
% of total
6.2%
Change from 2016
-3.0pp
366
6.2%
-3.0pp
60 to 64
2021 count
273
% of total
4.6%
Change from 2016
-4.6pp
273
4.6%
-4.6pp
65 to 69
2021 count
280
% of total
4.7%
Change from 2016
+2.4pp
280
4.7%
+2.4pp
70 to 74
2021 count
253
% of total
4.3%
Change from 2016
+2.0pp
253
4.3%
+2.0pp
75 to 79
2021 count
190
% of total
3.2%
Change from 2016
+3.2pp
190
3.2%
+3.2pp
80 to 84
2021 count
114
% of total
1.9%
Change from 2016
-0.4pp
114
1.9%
-0.4pp
85 and over
2021 count
66
% of total
1.1%
Change from 2016
+1.1pp
66
1.1%
+1.1pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+443
+0.7pp
5 to 9
+469
+1.2pp
10 to 14
+493
-3.6pp
15 to 19
+451
+3.1pp
20 to 24
+360
+6.1pp
25 to 29
+361
+1.6pp
30 to 34
+363
+6.1pp
35 to 39
+365
-0.6pp
40 to 44
+358
+1.5pp
45 to 49
+332
+3.4pp
50 to 54
+335
+1.2pp
55 to 59
+354
-3.0pp
60 to 64
+261
-4.6pp
65 to 69
+277
+2.4pp
70 to 74
+250
+2.0pp
75 to 79
+190
+3.2pp
80 to 84
+111
-0.4pp
85 and over
+66
+1.1pp
Data table
Five year age groups for Whalan. 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 | 452 | 7.6% | 7.5% | 9 | 6.9% | 8.0% | +443 | +0.7pp |
| 5 to 9 | 478 | 8.1% | 7.9% | 9 | 6.9% | 7.9% | +469 | +1.2pp |
| 10 to 14 | 509 | 8.6% | 7.3% | 16 | 12.2% | 6.9% | +493 | -3.6pp |
| 15 to 19 | 457 | 7.7% | 6.1% | 6 | 4.6% | 6.9% | +451 | +3.1pp |
| 20 to 24 | 360 | 6.1% | 6.7% | 0 | 0.0% | 6.8% | +360 | +6.1pp |
| 25 to 29 | 367 | 6.2% | 7.0% | 6 | 4.6% | 7.2% | +361 | +1.6pp |
| 30 to 34 | 363 | 6.1% | 7.9% | 0 | 0.0% | 8.3% | +363 | +6.1pp |
| 35 to 39 | 374 | 6.3% | 9.2% | 9 | 6.9% | 8.1% | +365 | -0.6pp |
| 40 to 44 | 364 | 6.1% | 7.8% | 6 | 4.6% | 7.2% | +358 | +1.5pp |
| 45 to 49 | 335 | 5.7% | 6.4% | 3 | 2.3% | 6.5% | +332 | +3.4pp |
| 50 to 54 | 341 | 5.8% | 5.6% | 6 | 4.6% | 6.0% | +335 | +1.2pp |
| 55 to 59 | 366 | 6.2% | 5.1% | 12 | 9.2% | 5.4% | +354 | -3.0pp |
| 60 to 64 | 273 | 4.6% | 4.5% | 12 | 9.2% | 4.6% | +261 | -4.6pp |
| 65 to 69 | 280 | 4.7% | 3.7% | 3 | 2.3% | 3.8% | +277 | +2.4pp |
| 70 to 74 | 253 | 4.3% | 3.1% | 3 | 2.3% | 2.5% | +250 | +2.0pp |
| 75 to 79 | 190 | 3.2% | 1.9% | 0 | 0.0% | 1.7% | +190 | +3.2pp |
| 80 to 84 | 114 | 1.9% | 1.2% | 3 | 2.3% | 1.1% | +111 | -0.4pp |
| 85 and over | 66 | 1.1% | 1.1% | 0 | 0.0% | 1.1% | +66 | +1.1pp |
| Total | 5,929 | 100.0% | 100.0% | 131 | 100.0% | 100.0% | +5,798 | 0.0pp |