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, 65 to 69 year olds was the largest age group among residents in Alstonville, accounting for 7.4% (437 people). This share was similar to Ballina (A) (7.6%). Since 2016, the biggest change was in 70 to 74 year olds, which increased by 64 people and 0.9 percentage points.
Section overview
Age structure - Five year age groups
Alstonville - Total persons (Usual residence)
This table summarises five year age groups for Alstonville in 2021 for persons, with comparison against Ballina (A) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Alstonville, with comparison markers for Ballina (A).
0 to 4
2021 count
257
% of total
4.3%
Change from 2016
-0.9pp
257
4.3%
-0.9pp
5 to 9
2021 count
317
% of total
5.4%
Change from 2016
-0.9pp
317
5.4%
-0.9pp
10 to 14
2021 count
363
% of total
6.1%
Change from 2016
+0.7pp
363
6.1%
+0.7pp
15 to 19
2021 count
301
% of total
5.1%
Change from 2016
-0.7pp
301
5.1%
-0.7pp
20 to 24
2021 count
203
% of total
3.4%
Change from 2016
+0.5pp
203
3.4%
+0.5pp
25 to 29
2021 count
204
% of total
3.5%
Change from 2016
+0.7pp
204
3.5%
+0.7pp
30 to 34
2021 count
273
% of total
4.6%
Change from 2016
+0.7pp
273
4.6%
+0.7pp
35 to 39
2021 count
281
% of total
4.8%
Change from 2016
-0.5pp
281
4.8%
-0.5pp
40 to 44
2021 count
303
% of total
5.1%
Change from 2016
-0.6pp
303
5.1%
-0.6pp
45 to 49
2021 count
328
% of total
5.5%
Change from 2016
-0.4pp
328
5.5%
-0.4pp
50 to 54
2021 count
382
% of total
6.5%
Change from 2016
+0.3pp
382
6.5%
+0.3pp
55 to 59
2021 count
367
% of total
6.2%
Change from 2016
-0.9pp
367
6.2%
-0.9pp
60 to 64
2021 count
423
% of total
7.2%
Change from 2016
+0.2pp
423
7.2%
+0.2pp
65 to 69
2021 count
437
% of total
7.4%
Change from 2016
+0.1pp
437
7.4%
+0.1pp
70 to 74
2021 count
426
% of total
7.2%
Change from 2016
+0.9pp
426
7.2%
+0.9pp
75 to 79
2021 count
353
% of total
6.0%
Change from 2016
+0.4pp
353
6.0%
+0.4pp
80 to 84
2021 count
318
% of total
5.4%
Change from 2016
+0.9pp
318
5.4%
+0.9pp
85 and over
2021 count
361
% of total
6.1%
Change from 2016
-0.2pp
361
6.1%
-0.2pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-39
-0.9pp
5 to 9
-45
-0.9pp
10 to 14
+55
+0.7pp
15 to 19
-32
-0.7pp
20 to 24
+37
+0.5pp
25 to 29
+45
+0.7pp
30 to 34
+49
+0.7pp
35 to 39
-24
-0.5pp
40 to 44
-25
-0.6pp
45 to 49
-12
-0.4pp
50 to 54
+26
+0.3pp
55 to 59
-39
-0.9pp
60 to 64
+19
+0.2pp
65 to 69
+16
+0.1pp
70 to 74
+64
+0.9pp
75 to 79
+33
+0.4pp
80 to 84
+60
+0.9pp
85 and over
+1
-0.2pp
Data table
Five year age groups for Alstonville. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Ballina (A).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Ballina (A)% | Count | % | Ballina (A)% | Count | pp | |
| 0 to 4 | 257 | 4.3% | 4.8% | 296 | 5.2% | 5.0% | -39 | -0.9pp |
| 5 to 9 | 317 | 5.4% | 5.5% | 362 | 6.3% | 5.8% | -45 | -0.9pp |
| 10 to 14 | 363 | 6.1% | 6.1% | 308 | 5.4% | 5.8% | +55 | +0.7pp |
| 15 to 19 | 301 | 5.1% | 5.2% | 333 | 5.8% | 5.7% | -32 | -0.7pp |
| 20 to 24 | 203 | 3.4% | 4.1% | 166 | 2.9% | 3.8% | +37 | +0.5pp |
| 25 to 29 | 204 | 3.5% | 4.2% | 159 | 2.8% | 3.9% | +45 | +0.7pp |
| 30 to 34 | 273 | 4.6% | 5.0% | 224 | 3.9% | 4.7% | +49 | +0.7pp |
| 35 to 39 | 281 | 4.8% | 5.6% | 305 | 5.3% | 5.0% | -24 | -0.5pp |
| 40 to 44 | 303 | 5.1% | 5.7% | 328 | 5.7% | 6.1% | -25 | -0.6pp |
| 45 to 49 | 328 | 5.5% | 6.3% | 340 | 5.9% | 6.7% | -12 | -0.4pp |
| 50 to 54 | 382 | 6.5% | 6.5% | 356 | 6.2% | 7.1% | +26 | +0.3pp |
| 55 to 59 | 367 | 6.2% | 6.8% | 406 | 7.1% | 7.7% | -39 | -0.9pp |
| 60 to 64 | 423 | 7.2% | 7.3% | 404 | 7.0% | 7.7% | +19 | +0.2pp |
| 65 to 69 | 437 | 7.4% | 7.6% | 421 | 7.3% | 7.5% | +16 | +0.1pp |
| 70 to 74 | 426 | 7.2% | 7.0% | 362 | 6.3% | 5.6% | +64 | +0.9pp |
| 75 to 79 | 353 | 6.0% | 5.0% | 320 | 5.6% | 4.4% | +33 | +0.4pp |
| 80 to 84 | 318 | 5.4% | 3.6% | 258 | 4.5% | 3.3% | +60 | +0.9pp |
| 85 and over | 361 | 6.1% | 4.0% | 360 | 6.3% | 4.2% | +1 | -0.2pp |
| Total | 5,912 | 100.0% | 100.0% | 5,739 | 100.0% | 100.0% | +173 | 0.0pp |