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 Gregory Hills, accounting for 13.6% (1,239 people). This share was higher than Camden (A) (9%). Since 2016, the biggest change was in 30 to 34 year olds, which increased by 822 people and 0.9 percentage points.
Section overview
Age structure - Five year age groups
Gregory Hills - Total persons (Usual residence)
This table summarises five year age groups for Gregory Hills in 2021 for persons, with comparison against Camden (A) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Gregory Hills, with comparison markers for Camden (A).
0 to 4
2021 count
1,197
% of total
13.1%
Change from 2016
+0.5pp
1,197
13.1%
+0.5pp
5 to 9
2021 count
801
% of total
8.8%
Change from 2016
+1.3pp
801
8.8%
+1.3pp
10 to 14
2021 count
604
% of total
6.6%
Change from 2016
+0.5pp
604
6.6%
+0.5pp
15 to 19
2021 count
453
% of total
5.0%
Change from 2016
-0.9pp
453
5.0%
-0.9pp
20 to 24
2021 count
491
% of total
5.4%
Change from 2016
-0.8pp
491
5.4%
-0.8pp
25 to 29
2021 count
973
% of total
10.6%
Change from 2016
-2.7pp
973
10.6%
-2.7pp
30 to 34
2021 count
1,239
% of total
13.6%
Change from 2016
+0.9pp
1,239
13.6%
+0.9pp
35 to 39
2021 count
978
% of total
10.7%
Change from 2016
+1.8pp
978
10.7%
+1.8pp
40 to 44
2021 count
645
% of total
7.1%
Change from 2016
+0.5pp
645
7.1%
+0.5pp
45 to 49
2021 count
437
% of total
4.8%
Change from 2016
-0.1pp
437
4.8%
-0.1pp
50 to 54
2021 count
325
% of total
3.6%
Change from 2016
-0.7pp
325
3.6%
-0.7pp
55 to 59
2021 count
309
% of total
3.4%
Change from 2016
-0.4pp
309
3.4%
-0.4pp
60 to 64
2021 count
248
% of total
2.7%
Change from 2016
-0.5pp
248
2.7%
-0.5pp
65 to 69
2021 count
192
% of total
2.1%
Change from 2016
+0.1pp
192
2.1%
+0.1pp
70 to 74
2021 count
98
% of total
1.1%
Change from 2016
-0.1pp
98
1.1%
-0.1pp
75 to 79
2021 count
61
% of total
0.7%
Change from 2016
+0.5pp
61
0.7%
+0.5pp
80 to 84
2021 count
34
% of total
0.4%
Change from 2016
+0.1pp
34
0.4%
+0.1pp
85 and over
2021 count
29
% of total
0.3%
Change from 2016
+0.1pp
29
0.3%
+0.1pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+783
+0.5pp
5 to 9
+555
+1.3pp
10 to 14
+402
+0.5pp
15 to 19
+260
-0.9pp
20 to 24
+287
-0.8pp
25 to 29
+537
-2.7pp
30 to 34
+822
+0.9pp
35 to 39
+685
+1.8pp
40 to 44
+428
+0.5pp
45 to 49
+278
-0.1pp
50 to 54
+185
-0.7pp
55 to 59
+185
-0.4pp
60 to 64
+144
-0.5pp
65 to 69
+127
+0.1pp
70 to 74
+59
-0.1pp
75 to 79
+54
+0.5pp
80 to 84
+23
+0.1pp
85 and over
+22
+0.1pp
Data table
Five year age groups for Gregory Hills. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Camden (A).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Camden (A)% | Count | % | Camden (A)% | Count | pp | |
| 0 to 4 | 1,197 | 13.1% | 9.4% | 414 | 12.6% | 8.4% | +783 | +0.5pp |
| 5 to 9 | 801 | 8.8% | 8.4% | 246 | 7.5% | 8.1% | +555 | +1.3pp |
| 10 to 14 | 604 | 6.6% | 7.4% | 202 | 6.1% | 7.4% | +402 | +0.5pp |
| 15 to 19 | 453 | 5.0% | 6.3% | 193 | 5.9% | 6.9% | +260 | -0.9pp |
| 20 to 24 | 491 | 5.4% | 5.9% | 204 | 6.2% | 6.2% | +287 | -0.8pp |
| 25 to 29 | 973 | 10.6% | 7.3% | 436 | 13.3% | 7.3% | +537 | -2.7pp |
| 30 to 34 | 1,239 | 13.6% | 9.0% | 417 | 12.7% | 7.9% | +822 | +0.9pp |
| 35 to 39 | 978 | 10.7% | 8.7% | 293 | 8.9% | 7.5% | +685 | +1.8pp |
| 40 to 44 | 645 | 7.1% | 7.1% | 217 | 6.6% | 7.8% | +428 | +0.5pp |
| 45 to 49 | 437 | 4.8% | 6.6% | 159 | 4.9% | 6.7% | +278 | -0.1pp |
| 50 to 54 | 325 | 3.6% | 5.4% | 140 | 4.3% | 5.9% | +185 | -0.7pp |
| 55 to 59 | 309 | 3.4% | 4.6% | 124 | 3.8% | 5.1% | +185 | -0.4pp |
| 60 to 64 | 248 | 2.7% | 4.0% | 104 | 3.2% | 4.4% | +144 | -0.5pp |
| 65 to 69 | 192 | 2.1% | 3.3% | 65 | 2.0% | 3.8% | +127 | +0.1pp |
| 70 to 74 | 98 | 1.1% | 2.8% | 39 | 1.2% | 2.6% | +59 | -0.1pp |
| 75 to 79 | 61 | 0.7% | 1.8% | 7 | 0.2% | 1.7% | +54 | +0.5pp |
| 80 to 84 | 34 | 0.4% | 1.1% | 11 | 0.3% | 1.2% | +23 | +0.1pp |
| 85 and over | 29 | 0.3% | 1.0% | 7 | 0.2% | 1.2% | +22 | +0.1pp |
| Total | 9,142 | 100.0% | 100.0% | 3,285 | 100.0% | 100.0% | +5,857 | 0.0pp |