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 Marayong, accounting for 8.3% (653 people). This share was higher than Blacktown (C) (7.9%). Since 2016, the biggest change was in 70 to 74 year olds, which increased by 137 people and 1.7 percentage points.
Section overview
Age structure - Five year age groups
Marayong - Total persons (Usual residence)
This table summarises five year age groups for Marayong 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 Marayong, with comparison markers for Blacktown (C).
0 to 4
2021 count
525
% of total
6.7%
Change from 2016
-0.3pp
525
6.7%
-0.3pp
5 to 9
2021 count
531
% of total
6.8%
Change from 2016
+0.3pp
531
6.8%
+0.3pp
10 to 14
2021 count
459
% of total
5.9%
Change from 2016
-0.2pp
459
5.9%
-0.2pp
15 to 19
2021 count
445
% of total
5.7%
Change from 2016
-0.1pp
445
5.7%
-0.1pp
20 to 24
2021 count
538
% of total
6.9%
Change from 2016
-0.2pp
538
6.9%
-0.2pp
25 to 29
2021 count
603
% of total
7.7%
Change from 2016
+0.1pp
603
7.7%
+0.1pp
30 to 34
2021 count
653
% of total
8.3%
Change from 2016
+0.4pp
653
8.3%
+0.4pp
35 to 39
2021 count
605
% of total
7.7%
Change from 2016
+0.2pp
605
7.7%
+0.2pp
40 to 44
2021 count
500
% of total
6.4%
Change from 2016
-0.2pp
500
6.4%
-0.2pp
45 to 49
2021 count
436
% of total
5.6%
Change from 2016
+0.3pp
436
5.6%
+0.3pp
50 to 54
2021 count
385
% of total
4.9%
Change from 2016
-0.4pp
385
4.9%
-0.4pp
55 to 59
2021 count
428
% of total
5.5%
Change from 2016
-0.2pp
428
5.5%
-0.2pp
60 to 64
2021 count
404
% of total
5.2%
Change from 2016
-0.4pp
404
5.2%
-0.4pp
65 to 69
2021 count
393
% of total
5.0%
Change from 2016
+0.1pp
393
5.0%
+0.1pp
70 to 74
2021 count
370
% of total
4.7%
Change from 2016
+1.7pp
370
4.7%
+1.7pp
75 to 79
2021 count
203
% of total
2.6%
Change from 2016
-0.2pp
203
2.6%
-0.2pp
80 to 84
2021 count
170
% of total
2.2%
Change from 2016
+0.2pp
170
2.2%
+0.2pp
85 and over
2021 count
200
% of total
2.6%
Change from 2016
-0.4pp
200
2.6%
-0.4pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-14
-0.3pp
5 to 9
+30
+0.3pp
10 to 14
-10
-0.2pp
15 to 19
+1
-0.1pp
20 to 24
-12
-0.2pp
25 to 29
+21
+0.1pp
30 to 34
+42
+0.4pp
35 to 39
+25
+0.2pp
40 to 44
-8
-0.2pp
45 to 49
+24
+0.3pp
50 to 54
-20
-0.4pp
55 to 59
-14
-0.2pp
60 to 64
-28
-0.4pp
65 to 69
+12
+0.1pp
70 to 74
+137
+1.7pp
75 to 79
-16
-0.2pp
80 to 84
+19
+0.2pp
85 and over
-30
-0.4pp
Data table
Five year age groups for Marayong. 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 | 525 | 6.7% | 7.5% | 539 | 7.0% | 8.0% | -14 | -0.3pp |
| 5 to 9 | 531 | 6.8% | 7.9% | 501 | 6.5% | 7.9% | +30 | +0.3pp |
| 10 to 14 | 459 | 5.9% | 7.3% | 469 | 6.1% | 6.9% | -10 | -0.2pp |
| 15 to 19 | 445 | 5.7% | 6.1% | 444 | 5.8% | 6.9% | +1 | -0.1pp |
| 20 to 24 | 538 | 6.9% | 6.7% | 550 | 7.1% | 6.8% | -12 | -0.2pp |
| 25 to 29 | 603 | 7.7% | 7.0% | 582 | 7.6% | 7.2% | +21 | +0.1pp |
| 30 to 34 | 653 | 8.3% | 7.9% | 611 | 7.9% | 8.3% | +42 | +0.4pp |
| 35 to 39 | 605 | 7.7% | 9.2% | 580 | 7.5% | 8.1% | +25 | +0.2pp |
| 40 to 44 | 500 | 6.4% | 7.8% | 508 | 6.6% | 7.2% | -8 | -0.2pp |
| 45 to 49 | 436 | 5.6% | 6.4% | 412 | 5.3% | 6.5% | +24 | +0.3pp |
| 50 to 54 | 385 | 4.9% | 5.6% | 405 | 5.3% | 6.0% | -20 | -0.4pp |
| 55 to 59 | 428 | 5.5% | 5.1% | 442 | 5.7% | 5.4% | -14 | -0.2pp |
| 60 to 64 | 404 | 5.2% | 4.5% | 432 | 5.6% | 4.6% | -28 | -0.4pp |
| 65 to 69 | 393 | 5.0% | 3.7% | 381 | 4.9% | 3.8% | +12 | +0.1pp |
| 70 to 74 | 370 | 4.7% | 3.1% | 233 | 3.0% | 2.5% | +137 | +1.7pp |
| 75 to 79 | 203 | 2.6% | 1.9% | 219 | 2.8% | 1.7% | -16 | -0.2pp |
| 80 to 84 | 170 | 2.2% | 1.2% | 151 | 2.0% | 1.1% | +19 | +0.2pp |
| 85 and over | 200 | 2.6% | 1.1% | 230 | 3.0% | 1.1% | -30 | -0.4pp |
| Total | 7,834 | 100.0% | 100.0% | 7,706 | 100.0% | 100.0% | +128 | 0.0pp |