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 Lethbridge Park, accounting for 8.3% (393 people). This share was higher than Blacktown (C) (7.9%). Since 2016, the biggest change was in 25 to 29 year olds, which decreased by 2,103 people and 5.2 percentage points.
Section overview
Age structure - Five year age groups
Lethbridge Park - Total persons (Usual residence)
This table summarises five year age groups for Lethbridge Park 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 Lethbridge Park, with comparison markers for Blacktown (C).
0 to 4
2021 count
377
% of total
8.0%
Change from 2016
+2.0pp
377
8.0%
+2.0pp
5 to 9
2021 count
393
% of total
8.3%
Change from 2016
+3.7pp
393
8.3%
+3.7pp
10 to 14
2021 count
365
% of total
7.7%
Change from 2016
+3.7pp
365
7.7%
+3.7pp
15 to 19
2021 count
327
% of total
6.9%
Change from 2016
+1.5pp
327
6.9%
+1.5pp
20 to 24
2021 count
372
% of total
7.9%
Change from 2016
-1.7pp
372
7.9%
-1.7pp
25 to 29
2021 count
347
% of total
7.3%
Change from 2016
-5.2pp
347
7.3%
-5.2pp
30 to 34
2021 count
314
% of total
6.6%
Change from 2016
-3.9pp
314
6.6%
-3.9pp
35 to 39
2021 count
259
% of total
5.5%
Change from 2016
-2.1pp
259
5.5%
-2.1pp
40 to 44
2021 count
266
% of total
5.6%
Change from 2016
-0.3pp
266
5.6%
-0.3pp
45 to 49
2021 count
279
% of total
5.9%
Change from 2016
-0.1pp
279
5.9%
-0.1pp
50 to 54
2021 count
302
% of total
6.4%
Change from 2016
+0.1pp
302
6.4%
+0.1pp
55 to 59
2021 count
263
% of total
5.6%
Change from 2016
-1.0pp
263
5.6%
-1.0pp
60 to 64
2021 count
201
% of total
4.2%
Change from 2016
-0.8pp
201
4.2%
-0.8pp
65 to 69
2021 count
157
% of total
3.3%
Change from 2016
0.0pp
157
3.3%
0.0pp
70 to 74
2021 count
167
% of total
3.5%
Change from 2016
+1.2pp
167
3.5%
+1.2pp
75 to 79
2021 count
171
% of total
3.6%
Change from 2016
+1.9pp
171
3.6%
+1.9pp
80 to 84
2021 count
82
% of total
1.7%
Change from 2016
+0.5pp
82
1.7%
+0.5pp
85 and over
2021 count
40
% of total
0.8%
Change from 2016
-0.5pp
40
0.8%
-0.5pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-800
+2.0pp
5 to 9
-517
+3.7pp
10 to 14
-421
+3.7pp
15 to 19
-741
+1.5pp
20 to 24
-1,520
-1.7pp
25 to 29
-2,103
-5.2pp
30 to 34
-1,751
-3.9pp
35 to 39
-1,236
-2.1pp
40 to 44
-893
-0.3pp
45 to 49
-907
-0.1pp
50 to 54
-933
+0.1pp
55 to 59
-1,035
-1.0pp
60 to 64
-779
-0.8pp
65 to 69
-495
0.0pp
70 to 74
-276
+1.2pp
75 to 79
-162
+1.9pp
80 to 84
-150
+0.5pp
85 and over
-218
-0.5pp
Data table
Five year age groups for Lethbridge Park. 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 | 377 | 8.0% | 7.5% | 1,177 | 6.0% | 8.0% | -800 | +2.0pp |
| 5 to 9 | 393 | 8.3% | 7.9% | 910 | 4.6% | 7.9% | -517 | +3.7pp |
| 10 to 14 | 365 | 7.7% | 7.3% | 786 | 4.0% | 6.9% | -421 | +3.7pp |
| 15 to 19 | 327 | 6.9% | 6.1% | 1,068 | 5.4% | 6.9% | -741 | +1.5pp |
| 20 to 24 | 372 | 7.9% | 6.7% | 1,892 | 9.6% | 6.8% | -1,520 | -1.7pp |
| 25 to 29 | 347 | 7.3% | 7.0% | 2,450 | 12.5% | 7.2% | -2,103 | -5.2pp |
| 30 to 34 | 314 | 6.6% | 7.9% | 2,065 | 10.5% | 8.3% | -1,751 | -3.9pp |
| 35 to 39 | 259 | 5.5% | 9.2% | 1,495 | 7.6% | 8.1% | -1,236 | -2.1pp |
| 40 to 44 | 266 | 5.6% | 7.8% | 1,159 | 5.9% | 7.2% | -893 | -0.3pp |
| 45 to 49 | 279 | 5.9% | 6.4% | 1,186 | 6.0% | 6.5% | -907 | -0.1pp |
| 50 to 54 | 302 | 6.4% | 5.6% | 1,235 | 6.3% | 6.0% | -933 | +0.1pp |
| 55 to 59 | 263 | 5.6% | 5.1% | 1,298 | 6.6% | 5.4% | -1,035 | -1.0pp |
| 60 to 64 | 201 | 4.2% | 4.5% | 980 | 5.0% | 4.6% | -779 | -0.8pp |
| 65 to 69 | 157 | 3.3% | 3.7% | 652 | 3.3% | 3.8% | -495 | 0.0pp |
| 70 to 74 | 167 | 3.5% | 3.1% | 443 | 2.3% | 2.5% | -276 | +1.2pp |
| 75 to 79 | 171 | 3.6% | 1.9% | 333 | 1.7% | 1.7% | -162 | +1.9pp |
| 80 to 84 | 82 | 1.7% | 1.2% | 232 | 1.2% | 1.1% | -150 | +0.5pp |
| 85 and over | 40 | 0.8% | 1.1% | 258 | 1.3% | 1.1% | -218 | -0.5pp |
| Total | 4,730 | 100.0% | 100.0% | 19,627 | 100.0% | 100.0% | -14,897 | 0.0pp |