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 Narrogin (S), accounting for 7.1% (339 people). This share was higher than Regional WA (6.7%). Since 2016, the biggest change was in 5 to 9 year olds, which decreased by 97 people and 1.4 percentage points.
Section overview
Age structure - Five year age groups
Narrogin (S) - Total persons (Usual residence)
This table summarises five year age groups for Narrogin (S) in 2021 for persons, with comparison against Regional WA and change since 2016.
Chart view
Age structure - Five year age groups snapshot
2021 distribution by category for Narrogin (S), with comparison markers for Regional WA.
0 to 4
2021 count
229
% of total
4.8%
Change from 2016
-1.5pp
229
4.8%
-1.5pp
5 to 9
2021 count
281
% of total
5.9%
Change from 2016
-1.4pp
281
5.9%
-1.4pp
10 to 14
2021 count
320
% of total
6.7%
Change from 2016
-0.3pp
320
6.7%
-0.3pp
15 to 19
2021 count
333
% of total
7.0%
Change from 2016
-0.5pp
333
7.0%
-0.5pp
20 to 24
2021 count
256
% of total
5.4%
Change from 2016
+0.3pp
256
5.4%
+0.3pp
25 to 29
2021 count
289
% of total
6.0%
Change from 2016
+0.6pp
289
6.0%
+0.6pp
30 to 34
2021 count
252
% of total
5.3%
Change from 2016
-0.3pp
252
5.3%
-0.3pp
35 to 39
2021 count
280
% of total
5.9%
Change from 2016
+0.8pp
280
5.9%
+0.8pp
40 to 44
2021 count
243
% of total
5.1%
Change from 2016
-0.7pp
243
5.1%
-0.7pp
45 to 49
2021 count
280
% of total
5.9%
Change from 2016
-0.5pp
280
5.9%
-0.5pp
50 to 54
2021 count
316
% of total
6.6%
Change from 2016
+0.4pp
316
6.6%
+0.4pp
55 to 59
2021 count
314
% of total
6.6%
Change from 2016
-0.8pp
314
6.6%
-0.8pp
60 to 64
2021 count
339
% of total
7.1%
Change from 2016
+0.4pp
339
7.1%
+0.4pp
65 to 69
2021 count
310
% of total
6.5%
Change from 2016
+0.6pp
310
6.5%
+0.6pp
70 to 74
2021 count
258
% of total
5.4%
Change from 2016
+1.1pp
258
5.4%
+1.1pp
75 to 79
2021 count
201
% of total
4.2%
Change from 2016
+1.1pp
201
4.2%
+1.1pp
80 to 84
2021 count
129
% of total
2.7%
Change from 2016
+0.3pp
129
2.7%
+0.3pp
85 and over
2021 count
151
% of total
3.2%
Change from 2016
+0.6pp
151
3.2%
+0.6pp
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-94
-1.5pp
5 to 9
-97
-1.4pp
10 to 14
-42
-0.3pp
15 to 19
-52
-0.5pp
20 to 24
-6
+0.3pp
25 to 29
+12
+0.6pp
30 to 34
-38
-0.3pp
35 to 39
+19
+0.8pp
40 to 44
-57
-0.7pp
45 to 49
-49
-0.5pp
50 to 54
-4
+0.4pp
55 to 59
-66
-0.8pp
60 to 64
-9
+0.4pp
65 to 69
+8
+0.6pp
70 to 74
+34
+1.1pp
75 to 79
+39
+1.1pp
80 to 84
+5
+0.3pp
85 and over
+17
+0.6pp
Data table
Five year age groups for Narrogin (S). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Regional WA.
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Regional WA% | Count | % | Regional WA% | Count | pp | |
| 0 to 4 | 229 | 4.8% | 6.0% | 323 | 6.3% | 6.6% | -94 | -1.5pp |
| 5 to 9 | 281 | 5.9% | 6.7% | 378 | 7.3% | 7.1% | -97 | -1.4pp |
| 10 to 14 | 320 | 6.7% | 6.7% | 362 | 7.0% | 6.5% | -42 | -0.3pp |
| 15 to 19 | 333 | 7.0% | 5.5% | 385 | 7.5% | 5.7% | -52 | -0.5pp |
| 20 to 24 | 256 | 5.4% | 4.8% | 262 | 5.1% | 5.0% | -6 | +0.3pp |
| 25 to 29 | 289 | 6.0% | 5.9% | 277 | 5.4% | 6.5% | +12 | +0.6pp |
| 30 to 34 | 252 | 5.3% | 6.6% | 290 | 5.6% | 7.1% | -38 | -0.3pp |
| 35 to 39 | 280 | 5.9% | 6.8% | 261 | 5.1% | 6.7% | +19 | +0.8pp |
| 40 to 44 | 243 | 5.1% | 6.4% | 300 | 5.8% | 7.0% | -57 | -0.7pp |
| 45 to 49 | 280 | 5.9% | 6.6% | 329 | 6.4% | 7.2% | -49 | -0.5pp |
| 50 to 54 | 316 | 6.6% | 6.9% | 320 | 6.2% | 7.1% | -4 | +0.4pp |
| 55 to 59 | 314 | 6.6% | 6.8% | 380 | 7.4% | 6.9% | -66 | -0.8pp |
| 60 to 64 | 339 | 7.1% | 6.7% | 348 | 6.7% | 6.0% | -9 | +0.4pp |
| 65 to 69 | 310 | 6.5% | 5.7% | 302 | 5.9% | 5.3% | +8 | +0.6pp |
| 70 to 74 | 258 | 5.4% | 4.9% | 224 | 4.3% | 3.6% | +34 | +1.1pp |
| 75 to 79 | 201 | 4.2% | 3.2% | 162 | 3.1% | 2.6% | +39 | +1.1pp |
| 80 to 84 | 129 | 2.7% | 2.0% | 124 | 2.4% | 1.6% | +5 | +0.3pp |
| 85 and over | 151 | 3.2% | 1.7% | 134 | 2.6% | 1.5% | +17 | +0.6pp |
| Total | 4,779 | 100.0% | 100.0% | 5,162 | 100.0% | 100.0% | -383 | 0.0pp |