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 Sinagra, accounting for 10.2% (316 people). This share was higher than Wanneroo (C) (7.4%). Since 2016, the biggest change was in 55 to 59 year olds, which decreased by 478 people and 3 percentage points.
Section overview
Age structure - Five year age groups
Sinagra - Total persons (Usual residence)
This table summarises five year age groups for Sinagra in 2021 for persons, with comparison against Wanneroo (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Sinagra, with comparison markers for Wanneroo (C).
0 to 4
2021 count
307
% of total
9.9%
Change from 2016
+3.8pp
307
9.9%
+3.8pp
5 to 9
2021 count
280
% of total
9.0%
Change from 2016
+2.8pp
280
9.0%
+2.8pp
10 to 14
2021 count
239
% of total
7.7%
Change from 2016
+2.3pp
239
7.7%
+2.3pp
15 to 19
2021 count
157
% of total
5.1%
Change from 2016
+0.1pp
157
5.1%
+0.1pp
20 to 24
2021 count
206
% of total
6.6%
Change from 2016
+1.9pp
206
6.6%
+1.9pp
25 to 29
2021 count
273
% of total
8.8%
Change from 2016
+3.3pp
273
8.8%
+3.3pp
30 to 34
2021 count
316
% of total
10.2%
Change from 2016
+3.8pp
316
10.2%
+3.8pp
35 to 39
2021 count
288
% of total
9.3%
Change from 2016
+2.8pp
288
9.3%
+2.8pp
40 to 44
2021 count
227
% of total
7.3%
Change from 2016
+1.1pp
227
7.3%
+1.1pp
45 to 49
2021 count
176
% of total
5.7%
Change from 2016
-1.3pp
176
5.7%
-1.3pp
50 to 54
2021 count
163
% of total
5.3%
Change from 2016
-0.6pp
163
5.3%
-0.6pp
55 to 59
2021 count
134
% of total
4.3%
Change from 2016
-3.0pp
134
4.3%
-3.0pp
60 to 64
2021 count
105
% of total
3.4%
Change from 2016
-2.9pp
105
3.4%
-2.9pp
65 to 69
2021 count
93
% of total
3.0%
Change from 2016
-3.1pp
93
3.0%
-3.1pp
70 to 74
2021 count
61
% of total
2.0%
Change from 2016
-2.8pp
61
2.0%
-2.8pp
75 to 79
2021 count
44
% of total
1.4%
Change from 2016
-2.3pp
44
1.4%
-2.3pp
80 to 84
2021 count
23
% of total
0.7%
Change from 2016
-2.3pp
23
0.7%
-2.3pp
85 and over
2021 count
5
% of total
0.2%
Change from 2016
-3.5pp
5
0.2%
-3.5pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-203
+3.8pp
5 to 9
-243
+2.8pp
10 to 14
-217
+2.3pp
15 to 19
-264
+0.1pp
20 to 24
-192
+1.9pp
25 to 29
-187
+3.3pp
30 to 34
-222
+3.8pp
35 to 39
-259
+2.8pp
40 to 44
-293
+1.1pp
45 to 49
-415
-1.3pp
50 to 54
-335
-0.6pp
55 to 59
-478
-3.0pp
60 to 64
-428
-2.9pp
65 to 69
-417
-3.1pp
70 to 74
-340
-2.8pp
75 to 79
-270
-2.3pp
80 to 84
-233
-2.3pp
85 and over
-303
-3.5pp
Data table
Five year age groups for Sinagra. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Wanneroo (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Wanneroo (C)% | Count | % | Wanneroo (C)% | Count | pp | |
| 0 to 4 | 307 | 9.9% | 7.1% | 510 | 6.1% | 8.0% | -203 | +3.8pp |
| 5 to 9 | 280 | 9.0% | 7.6% | 523 | 6.2% | 7.9% | -243 | +2.8pp |
| 10 to 14 | 239 | 7.7% | 7.4% | 456 | 5.4% | 7.1% | -217 | +2.3pp |
| 15 to 19 | 157 | 5.1% | 6.6% | 421 | 5.0% | 7.1% | -264 | +0.1pp |
| 20 to 24 | 206 | 6.6% | 6.4% | 398 | 4.7% | 6.8% | -192 | +1.9pp |
| 25 to 29 | 273 | 8.8% | 6.5% | 460 | 5.5% | 7.5% | -187 | +3.3pp |
| 30 to 34 | 316 | 10.2% | 7.4% | 538 | 6.4% | 8.1% | -222 | +3.8pp |
| 35 to 39 | 288 | 9.3% | 7.9% | 547 | 6.5% | 7.5% | -259 | +2.8pp |
| 40 to 44 | 227 | 7.3% | 6.9% | 520 | 6.2% | 7.6% | -293 | +1.1pp |
| 45 to 49 | 176 | 5.7% | 7.0% | 591 | 7.0% | 7.4% | -415 | -1.3pp |
| 50 to 54 | 163 | 5.3% | 6.7% | 498 | 5.9% | 6.2% | -335 | -0.6pp |
| 55 to 59 | 134 | 4.3% | 5.7% | 612 | 7.3% | 5.0% | -478 | -3.0pp |
| 60 to 64 | 105 | 3.4% | 4.7% | 533 | 6.3% | 3.9% | -428 | -2.9pp |
| 65 to 69 | 93 | 3.0% | 3.8% | 510 | 6.1% | 3.5% | -417 | -3.1pp |
| 70 to 74 | 61 | 2.0% | 3.3% | 401 | 4.8% | 2.4% | -340 | -2.8pp |
| 75 to 79 | 44 | 1.4% | 2.2% | 314 | 3.7% | 1.8% | -270 | -2.3pp |
| 80 to 84 | 23 | 0.7% | 1.5% | 256 | 3.0% | 1.2% | -233 | -2.3pp |
| 85 and over | 5 | 0.2% | 1.3% | 308 | 3.7% | 1.0% | -303 | -3.5pp |
| Total | 3,100 | 100.0% | 100.0% | 8,419 | 100.0% | 100.0% | -5,319 | 0.0pp |