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, 45 to 49 year olds was the largest age group among residents in Oatlands (NSW), accounting for 7.5% (435 people). This share was higher than Parramatta (C) (6.1%). Since 2016, the biggest change was in 85 and over year olds, which increased by 97 people and 1.7 percentage points.
Section overview
Age structure - Five year age groups
Oatlands (NSW) - Total persons (Usual residence)
This table summarises five year age groups for Oatlands (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 Oatlands (NSW), with comparison markers for Parramatta (C).
0 to 4
2021 count
252
% of total
4.3%
Change from 2016
-1.6pp
252
4.3%
-1.6pp
5 to 9
2021 count
413
% of total
7.1%
Change from 2016
+0.3pp
413
7.1%
+0.3pp
10 to 14
2021 count
432
% of total
7.4%
Change from 2016
+0.9pp
432
7.4%
+0.9pp
15 to 19
2021 count
373
% of total
6.4%
Change from 2016
-1.1pp
373
6.4%
-1.1pp
20 to 24
2021 count
409
% of total
7.0%
Change from 2016
+0.1pp
409
7.0%
+0.1pp
25 to 29
2021 count
273
% of total
4.7%
Change from 2016
-0.3pp
273
4.7%
-0.3pp
30 to 34
2021 count
250
% of total
4.3%
Change from 2016
-0.7pp
250
4.3%
-0.7pp
35 to 39
2021 count
342
% of total
5.9%
Change from 2016
-0.2pp
342
5.9%
-0.2pp
40 to 44
2021 count
352
% of total
6.0%
Change from 2016
-1.4pp
352
6.0%
-1.4pp
45 to 49
2021 count
435
% of total
7.5%
Change from 2016
+0.2pp
435
7.5%
+0.2pp
50 to 54
2021 count
410
% of total
7.0%
Change from 2016
-0.8pp
410
7.0%
-0.8pp
55 to 59
2021 count
428
% of total
7.3%
Change from 2016
+0.6pp
428
7.3%
+0.6pp
60 to 64
2021 count
378
% of total
6.5%
Change from 2016
+0.8pp
378
6.5%
+0.8pp
65 to 69
2021 count
311
% of total
5.3%
Change from 2016
+0.8pp
311
5.3%
+0.8pp
70 to 74
2021 count
236
% of total
4.0%
Change from 2016
+0.1pp
236
4.0%
+0.1pp
75 to 79
2021 count
195
% of total
3.3%
Change from 2016
+0.2pp
195
3.3%
+0.2pp
80 to 84
2021 count
149
% of total
2.6%
Change from 2016
+0.4pp
149
2.6%
+0.4pp
85 and over
2021 count
184
% of total
3.2%
Change from 2016
+1.7pp
184
3.2%
+1.7pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-84
-1.6pp
5 to 9
+29
+0.3pp
10 to 14
+64
+0.9pp
15 to 19
-53
-1.1pp
20 to 24
+20
+0.1pp
25 to 29
-8
-0.3pp
30 to 34
-31
-0.7pp
35 to 39
-3
-0.2pp
40 to 44
-67
-1.4pp
45 to 49
+19
+0.2pp
50 to 54
-31
-0.8pp
55 to 59
+46
+0.6pp
60 to 64
+57
+0.8pp
65 to 69
+58
+0.8pp
70 to 74
+16
+0.1pp
75 to 79
+17
+0.2pp
80 to 84
+26
+0.4pp
85 and over
+97
+1.7pp
Data table
Five year age groups for Oatlands (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 | 252 | 4.3% | 6.2% | 336 | 5.9% | 7.3% | -84 | -1.6pp |
| 5 to 9 | 413 | 7.1% | 6.5% | 384 | 6.8% | 6.2% | +29 | +0.3pp |
| 10 to 14 | 432 | 7.4% | 5.4% | 368 | 6.5% | 4.9% | +64 | +0.9pp |
| 15 to 19 | 373 | 6.4% | 4.5% | 426 | 7.5% | 5.1% | -53 | -1.1pp |
| 20 to 24 | 409 | 7.0% | 6.6% | 389 | 6.9% | 6.6% | +20 | +0.1pp |
| 25 to 29 | 273 | 4.7% | 9.1% | 281 | 5.0% | 9.2% | -8 | -0.3pp |
| 30 to 34 | 250 | 4.3% | 10.3% | 281 | 5.0% | 11.1% | -31 | -0.7pp |
| 35 to 39 | 342 | 5.9% | 10.2% | 345 | 6.1% | 8.8% | -3 | -0.2pp |
| 40 to 44 | 352 | 6.0% | 7.5% | 419 | 7.4% | 7.0% | -67 | -1.4pp |
| 45 to 49 | 435 | 7.5% | 6.1% | 416 | 7.3% | 6.0% | +19 | +0.2pp |
| 50 to 54 | 410 | 7.0% | 5.3% | 441 | 7.8% | 5.8% | -31 | -0.8pp |
| 55 to 59 | 428 | 7.3% | 5.0% | 382 | 6.7% | 5.3% | +46 | +0.6pp |
| 60 to 64 | 378 | 6.5% | 4.6% | 321 | 5.7% | 4.6% | +57 | +0.8pp |
| 65 to 69 | 311 | 5.3% | 3.9% | 253 | 4.5% | 3.8% | +58 | +0.8pp |
| 70 to 74 | 236 | 4.0% | 3.1% | 220 | 3.9% | 2.9% | +16 | +0.1pp |
| 75 to 79 | 195 | 3.3% | 2.3% | 178 | 3.1% | 2.2% | +17 | +0.2pp |
| 80 to 84 | 149 | 2.6% | 1.6% | 123 | 2.2% | 1.6% | +26 | +0.4pp |
| 85 and over | 184 | 3.2% | 1.6% | 87 | 1.5% | 1.7% | +97 | +1.7pp |
| Total | 5,833 | 100.0% | 100.0% | 5,660 | 100.0% | 100.0% | +173 | 0.0pp |