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, 30 to 34 year olds was the largest age group among residents in Lalor Park, accounting for 7.5% (586 people). This share was lower than Blacktown (C) (7.9%). Since 2016, the biggest change was in 30 to 34 year olds, which increased by 577 people and 4.5 percentage points.
Section overview
Age structure - Five year age groups
Lalor Park - Total persons (Usual residence)
This table summarises five year age groups for Lalor 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 Lalor Park, with comparison markers for Blacktown (C).
0 to 4
2021 count
512
% of total
6.5%
Change from 2016
+1.8pp
512
6.5%
+1.8pp
5 to 9
2021 count
504
% of total
6.4%
Change from 2016
0.0pp
504
6.4%
0.0pp
10 to 14
2021 count
521
% of total
6.7%
Change from 2016
+1.3pp
521
6.7%
+1.3pp
15 to 19
2021 count
454
% of total
5.8%
Change from 2016
-2.6pp
454
5.8%
-2.6pp
20 to 24
2021 count
496
% of total
6.3%
Change from 2016
+3.6pp
496
6.3%
+3.6pp
25 to 29
2021 count
576
% of total
7.4%
Change from 2016
+2.3pp
576
7.4%
+2.3pp
30 to 34
2021 count
586
% of total
7.5%
Change from 2016
+4.5pp
586
7.5%
+4.5pp
35 to 39
2021 count
558
% of total
7.1%
Change from 2016
+1.7pp
558
7.1%
+1.7pp
40 to 44
2021 count
543
% of total
6.9%
Change from 2016
-1.9pp
543
6.9%
-1.9pp
45 to 49
2021 count
517
% of total
6.6%
Change from 2016
+1.5pp
517
6.6%
+1.5pp
50 to 54
2021 count
491
% of total
6.3%
Change from 2016
-3.8pp
491
6.3%
-3.8pp
55 to 59
2021 count
476
% of total
6.1%
Change from 2016
-5.0pp
476
6.1%
-5.0pp
60 to 64
2021 count
499
% of total
6.4%
Change from 2016
-1.0pp
499
6.4%
-1.0pp
65 to 69
2021 count
378
% of total
4.8%
Change from 2016
+1.4pp
378
4.8%
+1.4pp
70 to 74
2021 count
282
% of total
3.6%
Change from 2016
+1.6pp
282
3.6%
+1.6pp
75 to 79
2021 count
176
% of total
2.2%
Change from 2016
-0.2pp
176
2.2%
-0.2pp
80 to 84
2021 count
120
% of total
1.5%
Change from 2016
+0.5pp
120
1.5%
+0.5pp
85 and over
2021 count
143
% of total
1.8%
Change from 2016
+1.8pp
143
1.8%
+1.8pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+498
+1.8pp
5 to 9
+485
0.0pp
10 to 14
+505
+1.3pp
15 to 19
+429
-2.6pp
20 to 24
+488
+3.6pp
25 to 29
+561
+2.3pp
30 to 34
+577
+4.5pp
35 to 39
+542
+1.7pp
40 to 44
+517
-1.9pp
45 to 49
+502
+1.5pp
50 to 54
+461
-3.8pp
55 to 59
+443
-5.0pp
60 to 64
+477
-1.0pp
65 to 69
+368
+1.4pp
70 to 74
+276
+1.6pp
75 to 79
+169
-0.2pp
80 to 84
+117
+0.5pp
85 and over
+143
+1.8pp
Data table
Five year age groups for Lalor 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 | 512 | 6.5% | 7.5% | 14 | 4.7% | 8.0% | +498 | +1.8pp |
| 5 to 9 | 504 | 6.4% | 7.9% | 19 | 6.4% | 7.9% | +485 | 0.0pp |
| 10 to 14 | 521 | 6.7% | 7.3% | 16 | 5.4% | 6.9% | +505 | +1.3pp |
| 15 to 19 | 454 | 5.8% | 6.1% | 25 | 8.4% | 6.9% | +429 | -2.6pp |
| 20 to 24 | 496 | 6.3% | 6.7% | 8 | 2.7% | 6.8% | +488 | +3.6pp |
| 25 to 29 | 576 | 7.4% | 7.0% | 15 | 5.1% | 7.2% | +561 | +2.3pp |
| 30 to 34 | 586 | 7.5% | 7.9% | 9 | 3.0% | 8.3% | +577 | +4.5pp |
| 35 to 39 | 558 | 7.1% | 9.2% | 16 | 5.4% | 8.1% | +542 | +1.7pp |
| 40 to 44 | 543 | 6.9% | 7.8% | 26 | 8.8% | 7.2% | +517 | -1.9pp |
| 45 to 49 | 517 | 6.6% | 6.4% | 15 | 5.1% | 6.5% | +502 | +1.5pp |
| 50 to 54 | 491 | 6.3% | 5.6% | 30 | 10.1% | 6.0% | +461 | -3.8pp |
| 55 to 59 | 476 | 6.1% | 5.1% | 33 | 11.1% | 5.4% | +443 | -5.0pp |
| 60 to 64 | 499 | 6.4% | 4.5% | 22 | 7.4% | 4.6% | +477 | -1.0pp |
| 65 to 69 | 378 | 4.8% | 3.7% | 10 | 3.4% | 3.8% | +368 | +1.4pp |
| 70 to 74 | 282 | 3.6% | 3.1% | 6 | 2.0% | 2.5% | +276 | +1.6pp |
| 75 to 79 | 176 | 2.2% | 1.9% | 7 | 2.4% | 1.7% | +169 | -0.2pp |
| 80 to 84 | 120 | 1.5% | 1.2% | 3 | 1.0% | 1.1% | +117 | +0.5pp |
| 85 and over | 143 | 1.8% | 1.1% | 0 | 0.0% | 1.1% | +143 | +1.8pp |
| Total | 7,834 | 100.0% | 100.0% | 297 | 100.0% | 100.0% | +7,537 | 0.0pp |