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, 35 to 39 year olds was the largest age group among residents in Dundas (NSW), accounting for 9% (446 people). This share was lower than Parramatta (C) (10.2%). Since 2016, the biggest change was in 35 to 39 year olds, which increased by 443 people and 5.9 percentage points.
Section overview
Age structure - Five year age groups
Dundas (NSW) - Total persons (Usual residence)
This table summarises five year age groups for Dundas (NSW) in 2021 for persons, with comparison against Parramatta (C) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Dundas (NSW), with comparison markers for Parramatta (C).
0 to 4
2021 count
332
% of total
6.7%
Change from 2016
+3.6pp
332
6.7%
+3.6pp
5 to 9
2021 count
304
% of total
6.1%
Change from 2016
+3.0pp
304
6.1%
+3.0pp
10 to 14
2021 count
290
% of total
5.8%
Change from 2016
+5.8pp
290
5.8%
+5.8pp
15 to 19
2021 count
294
% of total
5.9%
Change from 2016
-0.3pp
294
5.9%
-0.3pp
20 to 24
2021 count
325
% of total
6.6%
Change from 2016
+6.6pp
325
6.6%
+6.6pp
25 to 29
2021 count
282
% of total
5.7%
Change from 2016
+5.7pp
282
5.7%
+5.7pp
30 to 34
2021 count
429
% of total
8.7%
Change from 2016
+2.5pp
429
8.7%
+2.5pp
35 to 39
2021 count
446
% of total
9.0%
Change from 2016
+5.9pp
446
9.0%
+5.9pp
40 to 44
2021 count
336
% of total
6.8%
Change from 2016
+3.7pp
336
6.8%
+3.7pp
45 to 49
2021 count
326
% of total
6.6%
Change from 2016
-1.6pp
326
6.6%
-1.6pp
50 to 54
2021 count
348
% of total
7.0%
Change from 2016
+3.9pp
348
7.0%
+3.9pp
55 to 59
2021 count
302
% of total
6.1%
Change from 2016
-5.2pp
302
6.1%
-5.2pp
60 to 64
2021 count
293
% of total
5.9%
Change from 2016
+2.8pp
293
5.9%
+2.8pp
65 to 69
2021 count
209
% of total
4.2%
Change from 2016
+4.2pp
209
4.2%
+4.2pp
70 to 74
2021 count
173
% of total
3.5%
Change from 2016
+3.5pp
173
3.5%
+3.5pp
75 to 79
2021 count
103
% of total
2.1%
Change from 2016
-1.0pp
103
2.1%
-1.0pp
80 to 84
2021 count
93
% of total
1.9%
Change from 2016
+1.9pp
93
1.9%
+1.9pp
85 and over
2021 count
63
% of total
1.3%
Change from 2016
+1.3pp
63
1.3%
+1.3pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+329
+3.6pp
5 to 9
+301
+3.0pp
10 to 14
+290
+5.8pp
15 to 19
+288
-0.3pp
20 to 24
+325
+6.6pp
25 to 29
+282
+5.7pp
30 to 34
+423
+2.5pp
35 to 39
+443
+5.9pp
40 to 44
+333
+3.7pp
45 to 49
+318
-1.6pp
50 to 54
+345
+3.9pp
55 to 59
+291
-5.2pp
60 to 64
+290
+2.8pp
65 to 69
+209
+4.2pp
70 to 74
+173
+3.5pp
75 to 79
+100
-1.0pp
80 to 84
+93
+1.9pp
85 and over
+63
+1.3pp
Data table
Five year age groups for Dundas (NSW). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Parramatta (C).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Parramatta (C)% | Count | % | Parramatta (C)% | Count | pp | |
| 0 to 4 | 332 | 6.7% | 6.2% | 3 | 3.1% | 7.3% | +329 | +3.6pp |
| 5 to 9 | 304 | 6.1% | 6.5% | 3 | 3.1% | 6.2% | +301 | +3.0pp |
| 10 to 14 | 290 | 5.8% | 5.4% | 0 | 0.0% | 4.9% | +290 | +5.8pp |
| 15 to 19 | 294 | 5.9% | 4.5% | 6 | 6.2% | 5.1% | +288 | -0.3pp |
| 20 to 24 | 325 | 6.6% | 6.6% | 0 | 0.0% | 6.6% | +325 | +6.6pp |
| 25 to 29 | 282 | 5.7% | 9.1% | 0 | 0.0% | 9.2% | +282 | +5.7pp |
| 30 to 34 | 429 | 8.7% | 10.3% | 6 | 6.2% | 11.1% | +423 | +2.5pp |
| 35 to 39 | 446 | 9.0% | 10.2% | 3 | 3.1% | 8.8% | +443 | +5.9pp |
| 40 to 44 | 336 | 6.8% | 7.5% | 3 | 3.1% | 7.0% | +333 | +3.7pp |
| 45 to 49 | 326 | 6.6% | 6.1% | 8 | 8.2% | 6.0% | +318 | -1.6pp |
| 50 to 54 | 348 | 7.0% | 5.3% | 3 | 3.1% | 5.8% | +345 | +3.9pp |
| 55 to 59 | 302 | 6.1% | 5.0% | 11 | 11.3% | 5.3% | +291 | -5.2pp |
| 60 to 64 | 293 | 5.9% | 4.6% | 3 | 3.1% | 4.6% | +290 | +2.8pp |
| 65 to 69 | 209 | 4.2% | 3.9% | 0 | 0.0% | 3.8% | +209 | +4.2pp |
| 70 to 74 | 173 | 3.5% | 3.1% | 0 | 0.0% | 2.9% | +173 | +3.5pp |
| 75 to 79 | 103 | 2.1% | 2.3% | 3 | 3.1% | 2.2% | +100 | -1.0pp |
| 80 to 84 | 93 | 1.9% | 1.6% | 0 | 0.0% | 1.6% | +93 | +1.9pp |
| 85 and over | 63 | 1.3% | 1.6% | 0 | 0.0% | 1.7% | +63 | +1.3pp |
| Total | 4,959 | 100.0% | 100.0% | 97 | 100.0% | 100.0% | +4,862 | 0.0pp |