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 Tallawong, accounting for 13.5% (889 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 829 people and 4.3 percentage points.
Section overview
Age structure - Five year age groups
Tallawong - Total persons (Usual residence)
This table summarises five year age groups for Tallawong 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 Tallawong, with comparison markers for Blacktown (C).
0 to 4
2021 count
693
% of total
10.5%
Change from 2016
+1.1pp
693
10.5%
+1.1pp
5 to 9
2021 count
604
% of total
9.2%
Change from 2016
+1.1pp
604
9.2%
+1.1pp
10 to 14
2021 count
441
% of total
6.7%
Change from 2016
-0.5pp
441
6.7%
-0.5pp
15 to 19
2021 count
383
% of total
5.8%
Change from 2016
-0.5pp
383
5.8%
-0.5pp
20 to 24
2021 count
440
% of total
6.7%
Change from 2016
+0.5pp
440
6.7%
+0.5pp
25 to 29
2021 count
607
% of total
9.2%
Change from 2016
+1.4pp
607
9.2%
+1.4pp
30 to 34
2021 count
806
% of total
12.3%
Change from 2016
+2.5pp
806
12.3%
+2.5pp
35 to 39
2021 count
889
% of total
13.5%
Change from 2016
+4.3pp
889
13.5%
+4.3pp
40 to 44
2021 count
572
% of total
8.7%
Change from 2016
+1.2pp
572
8.7%
+1.2pp
45 to 49
2021 count
336
% of total
5.1%
Change from 2016
-1.3pp
336
5.1%
-1.3pp
50 to 54
2021 count
221
% of total
3.4%
Change from 2016
-2.2pp
221
3.4%
-2.2pp
55 to 59
2021 count
178
% of total
2.7%
Change from 2016
-1.8pp
178
2.7%
-1.8pp
60 to 64
2021 count
141
% of total
2.1%
Change from 2016
-2.0pp
141
2.1%
-2.0pp
65 to 69
2021 count
111
% of total
1.7%
Change from 2016
-1.3pp
111
1.7%
-1.3pp
70 to 74
2021 count
67
% of total
1.0%
Change from 2016
-0.8pp
67
1.0%
-0.8pp
75 to 79
2021 count
26
% of total
0.4%
Change from 2016
-1.0pp
26
0.4%
-1.0pp
80 to 84
2021 count
14
% of total
0.2%
Change from 2016
-0.5pp
14
0.2%
-0.5pp
85 and over
2021 count
10
% of total
0.2%
Change from 2016
-0.4pp
10
0.2%
-0.4pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+632
+1.1pp
5 to 9
+551
+1.1pp
10 to 14
+394
-0.5pp
15 to 19
+342
-0.5pp
20 to 24
+399
+0.5pp
25 to 29
+557
+1.4pp
30 to 34
+743
+2.5pp
35 to 39
+829
+4.3pp
40 to 44
+523
+1.2pp
45 to 49
+294
-1.3pp
50 to 54
+185
-2.2pp
55 to 59
+149
-1.8pp
60 to 64
+114
-2.0pp
65 to 69
+91
-1.3pp
70 to 74
+56
-0.8pp
75 to 79
+17
-1.0pp
80 to 84
+9
-0.5pp
85 and over
+6
-0.4pp
Data table
Five year age groups for Tallawong. 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 | 693 | 10.5% | 7.5% | 61 | 9.4% | 8.0% | +632 | +1.1pp |
| 5 to 9 | 604 | 9.2% | 7.9% | 53 | 8.1% | 7.9% | +551 | +1.1pp |
| 10 to 14 | 441 | 6.7% | 7.3% | 47 | 7.2% | 6.9% | +394 | -0.5pp |
| 15 to 19 | 383 | 5.8% | 6.1% | 41 | 6.3% | 6.9% | +342 | -0.5pp |
| 20 to 24 | 440 | 6.7% | 6.7% | 41 | 6.2% | 6.8% | +399 | +0.5pp |
| 25 to 29 | 607 | 9.2% | 7.0% | 50 | 7.8% | 7.2% | +557 | +1.4pp |
| 30 to 34 | 806 | 12.3% | 7.9% | 63 | 9.8% | 8.3% | +743 | +2.5pp |
| 35 to 39 | 889 | 13.5% | 9.2% | 60 | 9.2% | 8.1% | +829 | +4.3pp |
| 40 to 44 | 572 | 8.7% | 7.8% | 49 | 7.5% | 7.2% | +523 | +1.2pp |
| 45 to 49 | 336 | 5.1% | 6.4% | 42 | 6.4% | 6.5% | +294 | -1.3pp |
| 50 to 54 | 221 | 3.4% | 5.6% | 36 | 5.6% | 6.0% | +185 | -2.2pp |
| 55 to 59 | 178 | 2.7% | 5.1% | 29 | 4.5% | 5.4% | +149 | -1.8pp |
| 60 to 64 | 141 | 2.1% | 4.5% | 27 | 4.1% | 4.6% | +114 | -2.0pp |
| 65 to 69 | 111 | 1.7% | 3.7% | 20 | 3.0% | 3.8% | +91 | -1.3pp |
| 70 to 74 | 67 | 1.0% | 3.1% | 11 | 1.8% | 2.5% | +56 | -0.8pp |
| 75 to 79 | 26 | 0.4% | 1.9% | 9 | 1.4% | 1.7% | +17 | -1.0pp |
| 80 to 84 | 14 | 0.2% | 1.2% | 5 | 0.7% | 1.1% | +9 | -0.5pp |
| 85 and over | 10 | 0.2% | 1.1% | 4 | 0.6% | 1.1% | +6 | -0.4pp |
| Total | 6,570 | 100.0% | 100.0% | 650 | 100.0% | 100.0% | +5,920 | 0.0pp |