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 Northam, accounting for 7% (466 people). This share was lower than Northam (S) (7.6%). Since 2016, the biggest change was in 70 to 74 year olds, which increased by 87 people and 1.2 percentage points.
Section overview
Age structure - Five year age groups
Northam - Total persons (Usual residence)
This table summarises five year age groups for Northam in 2021 for persons, with comparison against Northam (S) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Northam, with comparison markers for Northam (S).
0 to 4
2021 count
394
% of total
5.9%
Change from 2016
-1.1pp
394
5.9%
-1.1pp
5 to 9
2021 count
456
% of total
6.8%
Change from 2016
+0.1pp
456
6.8%
+0.1pp
10 to 14
2021 count
446
% of total
6.7%
Change from 2016
-0.3pp
446
6.7%
-0.3pp
15 to 19
2021 count
434
% of total
6.5%
Change from 2016
+0.6pp
434
6.5%
+0.6pp
20 to 24
2021 count
365
% of total
5.5%
Change from 2016
0.0pp
365
5.5%
0.0pp
25 to 29
2021 count
347
% of total
5.2%
Change from 2016
-0.5pp
347
5.2%
-0.5pp
30 to 34
2021 count
392
% of total
5.9%
Change from 2016
+0.4pp
392
5.9%
+0.4pp
35 to 39
2021 count
378
% of total
5.7%
Change from 2016
0.0pp
378
5.7%
0.0pp
40 to 44
2021 count
357
% of total
5.3%
Change from 2016
-1.0pp
357
5.3%
-1.0pp
45 to 49
2021 count
409
% of total
6.1%
Change from 2016
+0.2pp
409
6.1%
+0.2pp
50 to 54
2021 count
402
% of total
6.0%
Change from 2016
-0.4pp
402
6.0%
-0.4pp
55 to 59
2021 count
461
% of total
6.9%
Change from 2016
-0.4pp
461
6.9%
-0.4pp
60 to 64
2021 count
466
% of total
7.0%
Change from 2016
+0.2pp
466
7.0%
+0.2pp
65 to 69
2021 count
418
% of total
6.3%
Change from 2016
+0.5pp
418
6.3%
+0.5pp
70 to 74
2021 count
374
% of total
5.6%
Change from 2016
+1.2pp
374
5.6%
+1.2pp
75 to 79
2021 count
259
% of total
3.9%
Change from 2016
+0.7pp
259
3.9%
+0.7pp
80 to 84
2021 count
161
% of total
2.4%
Change from 2016
+0.1pp
161
2.4%
+0.1pp
85 and over
2021 count
187
% of total
2.8%
Change from 2016
+0.2pp
187
2.8%
+0.2pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-66
-1.1pp
5 to 9
+15
+0.1pp
10 to 14
-11
-0.3pp
15 to 19
+50
+0.6pp
20 to 24
+2
0.0pp
25 to 29
-29
-0.5pp
30 to 34
+34
+0.4pp
35 to 39
+6
0.0pp
40 to 44
-57
-1.0pp
45 to 49
+22
+0.2pp
50 to 54
-20
-0.4pp
55 to 59
-20
-0.4pp
60 to 64
+21
+0.2pp
65 to 69
+35
+0.5pp
70 to 74
+87
+1.2pp
75 to 79
+49
+0.7pp
80 to 84
+8
+0.1pp
85 and over
+19
+0.2pp
Data table
Five year age groups for Northam. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Northam (S).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Northam (S)% | Count | % | Northam (S)% | Count | pp | |
| 0 to 4 | 394 | 5.9% | 5.1% | 460 | 7.0% | 6.0% | -66 | -1.1pp |
| 5 to 9 | 456 | 6.8% | 6.7% | 441 | 6.7% | 6.3% | +15 | +0.1pp |
| 10 to 14 | 446 | 6.7% | 6.3% | 457 | 7.0% | 6.6% | -11 | -0.3pp |
| 15 to 19 | 434 | 6.5% | 5.9% | 384 | 5.9% | 5.5% | +50 | +0.6pp |
| 20 to 24 | 365 | 5.5% | 5.0% | 363 | 5.5% | 5.3% | +2 | 0.0pp |
| 25 to 29 | 347 | 5.2% | 4.9% | 376 | 5.7% | 6.0% | -29 | -0.5pp |
| 30 to 34 | 392 | 5.9% | 6.0% | 358 | 5.5% | 6.0% | +34 | +0.4pp |
| 35 to 39 | 378 | 5.7% | 6.0% | 372 | 5.7% | 5.7% | +6 | 0.0pp |
| 40 to 44 | 357 | 5.3% | 5.4% | 414 | 6.3% | 6.7% | -57 | -1.0pp |
| 45 to 49 | 409 | 6.1% | 6.5% | 387 | 5.9% | 6.5% | +22 | +0.2pp |
| 50 to 54 | 402 | 6.0% | 6.6% | 422 | 6.4% | 6.6% | -20 | -0.4pp |
| 55 to 59 | 461 | 6.9% | 7.1% | 481 | 7.3% | 8.0% | -20 | -0.4pp |
| 60 to 64 | 466 | 7.0% | 7.6% | 445 | 6.8% | 7.2% | +21 | +0.2pp |
| 65 to 69 | 418 | 6.3% | 6.8% | 383 | 5.8% | 6.4% | +35 | +0.5pp |
| 70 to 74 | 374 | 5.6% | 5.9% | 287 | 4.4% | 4.6% | +87 | +1.2pp |
| 75 to 79 | 259 | 3.9% | 3.9% | 210 | 3.2% | 2.9% | +49 | +0.7pp |
| 80 to 84 | 161 | 2.4% | 2.3% | 153 | 2.3% | 2.0% | +8 | +0.1pp |
| 85 and over | 187 | 2.8% | 2.0% | 168 | 2.6% | 1.8% | +19 | +0.2pp |
| Total | 6,679 | 100.0% | 100.0% | 6,548 | 100.0% | 100.0% | +131 | 0.0pp |