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 Northampton, accounting for 10.4% (86 people). This share was higher than Northampton (S) (9.9%). Since 2016, the biggest change was in 65 to 69 year olds, which increased by 80 people and 6.3 percentage points.
Section overview
Age structure - Five year age groups
Northampton - Total persons (Usual residence)
This table summarises five year age groups for Northampton in 2021 for persons, with comparison against Northampton (S) and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Northampton, with comparison markers for Northampton (S).
0 to 4
2021 count
24
% of total
2.9%
Change from 2016
-1.2pp
24
2.9%
-1.2pp
5 to 9
2021 count
43
% of total
5.2%
Change from 2016
+2.4pp
43
5.2%
+2.4pp
10 to 14
2021 count
49
% of total
5.9%
Change from 2016
-0.3pp
49
5.9%
-0.3pp
15 to 19
2021 count
27
% of total
3.3%
Change from 2016
+1.2pp
27
3.3%
+1.2pp
20 to 24
2021 count
26
% of total
3.1%
Change from 2016
-5.2pp
26
3.1%
-5.2pp
25 to 29
2021 count
15
% of total
1.8%
Change from 2016
-0.3pp
15
1.8%
-0.3pp
30 to 34
2021 count
31
% of total
3.7%
Change from 2016
-1.1pp
31
3.7%
-1.1pp
35 to 39
2021 count
44
% of total
5.3%
Change from 2016
+3.2pp
44
5.3%
+3.2pp
40 to 44
2021 count
31
% of total
3.7%
Change from 2016
-0.4pp
31
3.7%
-0.4pp
45 to 49
2021 count
36
% of total
4.3%
Change from 2016
+0.2pp
36
4.3%
+0.2pp
50 to 54
2021 count
63
% of total
7.6%
Change from 2016
-1.4pp
63
7.6%
-1.4pp
55 to 59
2021 count
62
% of total
7.5%
Change from 2016
-2.2pp
62
7.5%
-2.2pp
60 to 64
2021 count
73
% of total
8.8%
Change from 2016
-4.3pp
73
8.8%
-4.3pp
65 to 69
2021 count
86
% of total
10.4%
Change from 2016
+6.3pp
86
10.4%
+6.3pp
70 to 74
2021 count
71
% of total
8.6%
Change from 2016
+6.5pp
71
8.6%
+6.5pp
75 to 79
2021 count
59
% of total
7.1%
Change from 2016
+5.0pp
59
7.1%
+5.0pp
80 to 84
2021 count
35
% of total
4.2%
Change from 2016
+2.1pp
35
4.2%
+2.1pp
85 and over
2021 count
40
% of total
4.8%
Change from 2016
+2.7pp
40
4.8%
+2.7pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
+18
-1.2pp
5 to 9
+39
+2.4pp
10 to 14
+40
-0.3pp
15 to 19
+24
+1.2pp
20 to 24
+14
-5.2pp
25 to 29
+12
-0.3pp
30 to 34
+24
-1.1pp
35 to 39
+41
+3.2pp
40 to 44
+25
-0.4pp
45 to 49
+30
+0.2pp
50 to 54
+50
-1.4pp
55 to 59
+48
-2.2pp
60 to 64
+54
-4.3pp
65 to 69
+80
+6.3pp
70 to 74
+68
+6.5pp
75 to 79
+56
+5.0pp
80 to 84
+32
+2.1pp
85 and over
+37
+2.7pp
Data table
Five year age groups for Northampton. Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Northampton (S).
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Northampton (S)% | Count | % | Northampton (S)% | Count | pp | |
| 0 to 4 | 24 | 2.9% | 4.0% | 6 | 4.1% | 4.5% | +18 | -1.2pp |
| 5 to 9 | 43 | 5.2% | 5.6% | 4 | 2.8% | 5.6% | +39 | +2.4pp |
| 10 to 14 | 49 | 5.9% | 4.9% | 9 | 6.2% | 5.1% | +40 | -0.3pp |
| 15 to 19 | 27 | 3.3% | 3.5% | 3 | 2.1% | 4.1% | +24 | +1.2pp |
| 20 to 24 | 26 | 3.1% | 3.0% | 12 | 8.3% | 3.9% | +14 | -5.2pp |
| 25 to 29 | 15 | 1.8% | 2.9% | 3 | 2.1% | 3.3% | +12 | -0.3pp |
| 30 to 34 | 31 | 3.7% | 4.8% | 7 | 4.8% | 4.0% | +24 | -1.1pp |
| 35 to 39 | 44 | 5.3% | 5.1% | 3 | 2.1% | 4.6% | +41 | +3.2pp |
| 40 to 44 | 31 | 3.7% | 5.2% | 6 | 4.1% | 5.9% | +25 | -0.4pp |
| 45 to 49 | 36 | 4.3% | 5.7% | 6 | 4.1% | 7.3% | +30 | +0.2pp |
| 50 to 54 | 63 | 7.6% | 6.9% | 13 | 9.0% | 8.1% | +50 | -1.4pp |
| 55 to 59 | 62 | 7.5% | 8.7% | 14 | 9.7% | 9.4% | +48 | -2.2pp |
| 60 to 64 | 73 | 8.8% | 9.7% | 19 | 13.1% | 10.4% | +54 | -4.3pp |
| 65 to 69 | 86 | 10.4% | 9.9% | 6 | 4.1% | 8.7% | +80 | +6.3pp |
| 70 to 74 | 71 | 8.6% | 8.4% | 3 | 2.1% | 6.9% | +68 | +6.5pp |
| 75 to 79 | 59 | 7.1% | 5.8% | 3 | 2.1% | 3.8% | +56 | +5.0pp |
| 80 to 84 | 35 | 4.2% | 2.9% | 3 | 2.1% | 2.2% | +32 | +2.1pp |
| 85 and over | 40 | 4.8% | 2.5% | 3 | 2.1% | 1.9% | +37 | +2.7pp |
| Total | 830 | 100.0% | 100.0% | 145 | 100.0% | 100.0% | +685 | 0.0pp |