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 Ropes Crossing, accounting for 12.6% (915 people). This share was higher than Blacktown (C) (9.2%). Since 2016, the biggest change was in 10 to 14 year olds, which increased by 266 people and 2.8 percentage points.
Section overview
Age structure - Five year age groups
Ropes Crossing - Total persons (Usual residence)
This table summarises five year age groups for Ropes Crossing 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 Ropes Crossing, with comparison markers for Blacktown (C).
0 to 4
2021 count
759
% of total
10.4%
Change from 2016
-3.0pp
759
10.4%
-3.0pp
5 to 9
2021 count
847
% of total
11.6%
Change from 2016
+1.7pp
847
11.6%
+1.7pp
10 to 14
2021 count
620
% of total
8.5%
Change from 2016
+2.8pp
620
8.5%
+2.8pp
15 to 19
2021 count
425
% of total
5.8%
Change from 2016
+1.3pp
425
5.8%
+1.3pp
20 to 24
2021 count
395
% of total
5.4%
Change from 2016
-0.1pp
395
5.4%
-0.1pp
25 to 29
2021 count
460
% of total
6.3%
Change from 2016
-3.8pp
460
6.3%
-3.8pp
30 to 34
2021 count
651
% of total
8.9%
Change from 2016
-5.1pp
651
8.9%
-5.1pp
35 to 39
2021 count
915
% of total
12.6%
Change from 2016
+2.0pp
915
12.6%
+2.0pp
40 to 44
2021 count
667
% of total
9.2%
Change from 2016
+2.5pp
667
9.2%
+2.5pp
45 to 49
2021 count
375
% of total
5.2%
Change from 2016
+1.0pp
375
5.2%
+1.0pp
50 to 54
2021 count
270
% of total
3.7%
Change from 2016
+0.4pp
270
3.7%
+0.4pp
55 to 59
2021 count
223
% of total
3.1%
Change from 2016
+0.3pp
223
3.1%
+0.3pp
60 to 64
2021 count
164
% of total
2.3%
Change from 2016
0.0pp
164
2.3%
0.0pp
65 to 69
2021 count
116
% of total
1.6%
Change from 2016
-0.2pp
116
1.6%
-0.2pp
70 to 74
2021 count
119
% of total
1.6%
Change from 2016
-0.2pp
119
1.6%
-0.2pp
75 to 79
2021 count
117
% of total
1.6%
Change from 2016
+0.2pp
117
1.6%
+0.2pp
80 to 84
2021 count
78
% of total
1.1%
Change from 2016
-0.1pp
78
1.1%
-0.1pp
85 and over
2021 count
69
% of total
0.9%
Change from 2016
+0.4pp
69
0.9%
+0.4pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-70
-3.0pp
5 to 9
+235
+1.7pp
10 to 14
+266
+2.8pp
15 to 19
+147
+1.3pp
20 to 24
+56
-0.1pp
25 to 29
-162
-3.8pp
30 to 34
-214
-5.1pp
35 to 39
+261
+2.0pp
40 to 44
+256
+2.5pp
45 to 49
+113
+1.0pp
50 to 54
+68
+0.4pp
55 to 59
+49
+0.3pp
60 to 64
+21
0.0pp
65 to 69
+6
-0.2pp
70 to 74
+6
-0.2pp
75 to 79
+29
+0.2pp
80 to 84
+2
-0.1pp
85 and over
+38
+0.4pp
Data table
Five year age groups for Ropes Crossing. 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 | 759 | 10.4% | 7.5% | 829 | 13.4% | 8.0% | -70 | -3.0pp |
| 5 to 9 | 847 | 11.6% | 7.9% | 612 | 9.9% | 7.9% | +235 | +1.7pp |
| 10 to 14 | 620 | 8.5% | 7.3% | 354 | 5.7% | 6.9% | +266 | +2.8pp |
| 15 to 19 | 425 | 5.8% | 6.1% | 278 | 4.5% | 6.9% | +147 | +1.3pp |
| 20 to 24 | 395 | 5.4% | 6.7% | 339 | 5.5% | 6.8% | +56 | -0.1pp |
| 25 to 29 | 460 | 6.3% | 7.0% | 622 | 10.1% | 7.2% | -162 | -3.8pp |
| 30 to 34 | 651 | 8.9% | 7.9% | 865 | 14.0% | 8.3% | -214 | -5.1pp |
| 35 to 39 | 915 | 12.6% | 9.2% | 654 | 10.6% | 8.1% | +261 | +2.0pp |
| 40 to 44 | 667 | 9.2% | 7.8% | 411 | 6.7% | 7.2% | +256 | +2.5pp |
| 45 to 49 | 375 | 5.2% | 6.4% | 262 | 4.2% | 6.5% | +113 | +1.0pp |
| 50 to 54 | 270 | 3.7% | 5.6% | 202 | 3.3% | 6.0% | +68 | +0.4pp |
| 55 to 59 | 223 | 3.1% | 5.1% | 174 | 2.8% | 5.4% | +49 | +0.3pp |
| 60 to 64 | 164 | 2.3% | 4.5% | 143 | 2.3% | 4.6% | +21 | 0.0pp |
| 65 to 69 | 116 | 1.6% | 3.7% | 110 | 1.8% | 3.8% | +6 | -0.2pp |
| 70 to 74 | 119 | 1.6% | 3.1% | 113 | 1.8% | 2.5% | +6 | -0.2pp |
| 75 to 79 | 117 | 1.6% | 1.9% | 88 | 1.4% | 1.7% | +29 | +0.2pp |
| 80 to 84 | 78 | 1.1% | 1.2% | 76 | 1.2% | 1.1% | +2 | -0.1pp |
| 85 and over | 69 | 0.9% | 1.1% | 31 | 0.5% | 1.1% | +38 | +0.4pp |
| Total | 7,280 | 100.0% | 100.0% | 6,171 | 100.0% | 100.0% | +1,109 | 0.0pp |