Compare where children, young adults, working-age people and older residents make up the greatest shares—and how those populations changed from 2021 to 2025.
316 councils294 England and 22 Wales
2025 estimatesCurrent population-share basis
2021–2025Population-change period
Age group
Comparison
Population estimates are not exact counts. They may be revised as ONS incorporates improved evidence. Age groups intentionally overlap: school-age residents are within children, and young adults overlap the working-age group.
Highest values: Children aged 0–17
Highest values for Children aged 0–17
Rank
Council area
Nation
Change
2025 cohort
2025 share
2021 cohort
People change
1
Tewkesbury
England
+11.8%
21,882
21.1%
19,571
+2,311
2
Rugby
England
+11.3%
27,851
22.2%
25,018
+2,833
3
Oadby and Wigston
England
+11.1%
13,197
21.5%
11,883
+1,314
4
Vale of White Horse
England
+10.8%
32,904
21.6%
29,704
+3,200
5
Preston
England
+10.7%
36,295
22.1%
32,786
+3,509
6
South Derbyshire
England
+10.6%
25,190
21.1%
22,774
+2,416
7
Central Bedfordshire
England
+10.4%
70,814
22.0%
64,122
+6,692
8
Maidstone
England
+10.1%
41,489
21.7%
37,676
+3,813
9
Dartford
England
+9.9%
31,704
25.1%
28,852
+2,852
10
Nuneaton and Bedworth
England
+9.5%
31,291
21.7%
28,575
+2,716
11
Havering
England
+9.2%
63,937
22.8%
58,546
+5,391
12
Stratford-on-Avon
England
+9.1%
27,409
18.4%
25,118
+2,291
13
Wolverhampton
England
+8.3%
67,168
23.9%
62,006
+5,162
14
Mid Suffolk
England
+8.1%
20,281
17.9%
18,754
+1,527
15
Bassetlaw
England
+8.1%
24,847
19.7%
22,984
+1,863
16
Warwick
England
+7.9%
30,495
19.3%
28,271
+2,224
17
Knowsley
England
+7.3%
36,325
22.2%
33,841
+2,484
18
South Cambridgeshire
England
+7.3%
38,230
21.9%
35,624
+2,606
19
Winchester
England
+7.3%
27,872
20.4%
25,974
+1,898
20
Rushcliffe
England
+7.3%
25,874
20.2%
24,114
+1,760
Lowest values: Children aged 0–17
Lowest values for Children aged 0–17
Rank
Council area
Nation
Change
2025 cohort
2025 share
2021 cohort
People change
1
Westminster
England
-11.1%
27,204
12.8%
30,607
-3,403
2
Camden
England
-10.6%
32,692
15.1%
36,574
-3,882
3
Lambeth
England
-10.3%
48,738
15.5%
54,325
-5,587
4
Kensington and Chelsea
England
-9.6%
20,679
14.2%
22,879
-2,200
5
Southwark
England
-8.5%
52,380
16.8%
57,270
-4,890
6
Lewisham
England
-7.3%
59,714
19.8%
64,443
-4,729
7
Tower Hamlets
England
-6.8%
59,970
17.9%
64,373
-4,403
8
Islington
England
-6.8%
34,104
15.2%
36,604
-2,500
9
Hackney
England
-6.6%
52,059
19.6%
55,760
-3,701
10
Haringey
England
-6.0%
51,119
19.2%
54,366
-3,247
11
Enfield
England
-5.3%
77,419
23.5%
81,789
-4,370
12
Newham
England
-5.2%
79,500
21.1%
83,860
-4,360
13
Greenwich
England
-5.2%
62,301
20.7%
65,697
-3,396
14
Wandsworth
England
-5.0%
56,416
16.6%
59,391
-2,975
15
Hammersmith and Fulham
England
-5.0%
30,229
15.9%
31,820
-1,591
16
Merton
England
-4.7%
44,777
20.5%
46,986
-2,209
17
Brighton and Hove
England
-4.6%
44,972
15.8%
47,125
-2,153
18
Torbay
England
-4.2%
24,134
17.3%
25,182
-1,048
19
Hastings
England
-4.0%
17,528
19.3%
18,260
-732
20
Waltham Forest
England
-3.9%
60,156
21.2%
62,581
-2,425
Methodology and limitations
Current share
The selected age-group population as a percentage of the council's total 2025 population.
Population change
Percentage change in the selected age group between 2021 and 2025. “Lowest” is used because some groups grew everywhere.
Eligibility
Councils require at least 10,000 residents in both years. Change rankings also require at least 500 people in the starting cohort.
Source: Office for National Statistics mid-year population estimates via Nomis. Current April 2023 district and unitary authority geography. Licensed under the Open Government Licence v3.0.