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, 60 to 64 year olds was the largest age group among residents in Bellerive, accounting for 7.3% (360 people). This share was higher than Clarence (C) (6.6%). Since 2016, the biggest change was in 25 to 29 year olds, which increased by 128 people and 2.2 percentage points.
Section overview
Age structure - Five year age groups
Bellerive - Total persons (Usual residence)
This table summarises five year age groups for Bellerive in 2021 for persons, with comparison against Clarence (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Bellerive, with comparison markers for Clarence (C).
0 to 4
2021 count
216
% of total
4.4%
Change from 2016
-0.3pp
216
4.4%
-0.3pp
5 to 9
2021 count
224
% of total
4.5%
Change from 2016
-0.6pp
224
4.5%
-0.6pp
10 to 14
2021 count
259
% of total
5.2%
Change from 2016
+0.4pp
259
5.2%
+0.4pp
15 to 19
2021 count
212
% of total
4.3%
Change from 2016
-1.1pp
212
4.3%
-1.1pp
20 to 24
2021 count
256
% of total
5.2%
Change from 2016
-0.1pp
256
5.2%
-0.1pp
25 to 29
2021 count
337
% of total
6.8%
Change from 2016
+2.2pp
337
6.8%
+2.2pp
30 to 34
2021 count
354
% of total
7.2%
Change from 2016
+1.9pp
354
7.2%
+1.9pp
35 to 39
2021 count
330
% of total
6.7%
Change from 2016
+0.5pp
330
6.7%
+0.5pp
40 to 44
2021 count
288
% of total
5.8%
Change from 2016
-0.1pp
288
5.8%
-0.1pp
45 to 49
2021 count
281
% of total
5.7%
Change from 2016
-0.4pp
281
5.7%
-0.4pp
50 to 54
2021 count
281
% of total
5.7%
Change from 2016
-1.3pp
281
5.7%
-1.3pp
55 to 59
2021 count
285
% of total
5.8%
Change from 2016
-2.2pp
285
5.8%
-2.2pp
60 to 64
2021 count
360
% of total
7.3%
Change from 2016
-0.2pp
360
7.3%
-0.2pp
65 to 69
2021 count
323
% of total
6.5%
Change from 2016
-1.1pp
323
6.5%
-1.1pp
70 to 74
2021 count
342
% of total
6.9%
Change from 2016
+1.3pp
342
6.9%
+1.3pp
75 to 79
2021 count
241
% of total
4.9%
Change from 2016
+0.2pp
241
4.9%
+0.2pp
80 to 84
2021 count
182
% of total
3.7%
Change from 2016
+0.1pp
182
3.7%
+0.1pp
85 and over
2021 count
181
% of total
3.7%
Change from 2016
+0.1pp
181
3.7%
+0.1pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+6
-0.3pp
5 to 9
-6
-0.6pp
10 to 14
+43
+0.4pp
15 to 19
-31
-1.1pp
20 to 24
+17
-0.1pp
25 to 29
+128
+2.2pp
30 to 34
+115
+1.9pp
35 to 39
+51
+0.5pp
40 to 44
+22
-0.1pp
45 to 49
+8
-0.4pp
50 to 54
-33
-1.3pp
55 to 59
-74
-2.2pp
60 to 64
+24
-0.2pp
65 to 69
-21
-1.1pp
70 to 74
+90
+1.3pp
75 to 79
+29
+0.2pp
80 to 84
+18
+0.1pp
85 and over
+18
+0.1pp
Data table
Five year age groups for Bellerive. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Clarence (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Clarence (C)% | Count | % | Clarence (C)% | Count | pp | |
| 0 to 4 | 216 | 4.4% | 5.4% | 210 | 4.7% | 5.8% | +6 | -0.3pp |
| 5 to 9 | 224 | 4.5% | 5.8% | 230 | 5.1% | 6.4% | -6 | -0.6pp |
| 10 to 14 | 259 | 5.2% | 6.1% | 216 | 4.8% | 5.7% | +43 | +0.4pp |
| 15 to 19 | 212 | 4.3% | 5.1% | 243 | 5.4% | 5.8% | -31 | -1.1pp |
| 20 to 24 | 256 | 5.2% | 5.2% | 239 | 5.3% | 5.2% | +17 | -0.1pp |
| 25 to 29 | 337 | 6.8% | 6.8% | 209 | 4.6% | 5.3% | +128 | +2.2pp |
| 30 to 34 | 354 | 7.2% | 7.2% | 239 | 5.3% | 6.1% | +115 | +1.9pp |
| 35 to 39 | 330 | 6.7% | 6.9% | 279 | 6.2% | 6.0% | +51 | +0.5pp |
| 40 to 44 | 288 | 5.8% | 5.9% | 266 | 5.9% | 6.4% | +22 | -0.1pp |
| 45 to 49 | 281 | 5.7% | 6.0% | 273 | 6.1% | 6.7% | +8 | -0.4pp |
| 50 to 54 | 281 | 5.7% | 6.0% | 314 | 7.0% | 6.8% | -33 | -1.3pp |
| 55 to 59 | 285 | 5.8% | 6.1% | 359 | 8.0% | 7.3% | -74 | -2.2pp |
| 60 to 64 | 360 | 7.3% | 6.6% | 336 | 7.5% | 6.6% | +24 | -0.2pp |
| 65 to 69 | 323 | 6.5% | 5.9% | 344 | 7.6% | 6.4% | -21 | -1.1pp |
| 70 to 74 | 342 | 6.9% | 5.6% | 252 | 5.6% | 4.8% | +90 | +1.3pp |
| 75 to 79 | 241 | 4.9% | 4.0% | 212 | 4.7% | 3.7% | +29 | +0.2pp |
| 80 to 84 | 182 | 3.7% | 2.8% | 164 | 3.6% | 2.5% | +18 | +0.1pp |
| 85 and over | 181 | 3.7% | 2.7% | 163 | 3.6% | 2.7% | +18 | +0.1pp |
| Total | 4,945 | 100.0% | 100.0% | 4,503 | 100.0% | 100.0% | +442 | 0.0pp |