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: School-age population aged 5–17
Highest values for School-age population aged 5–17
Rank
Council area
Nation
Change
2025 cohort
2025 share
2021 cohort
People change
1
Tewkesbury
England
+15.4%
16,502
15.9%
14,304
+2,198
2
Dartford
England
+14.5%
23,538
18.6%
20,566
+2,972
3
Rugby
England
+14.1%
21,265
16.9%
18,641
+2,624
4
Maidstone
England
+13.7%
30,941
16.2%
27,225
+3,716
5
Oadby and Wigston
England
+12.4%
10,135
16.5%
9,016
+1,119
6
Central Bedfordshire
England
+11.6%
51,646
16.1%
46,266
+5,380
7
Vale of White Horse
England
+11.5%
24,485
16.1%
21,956
+2,529
8
Havering
England
+11.3%
46,924
16.7%
42,168
+4,756
9
Wokingham
England
+11.0%
34,755
18.4%
31,306
+3,449
10
Nuneaton and Bedworth
England
+10.8%
23,093
16.0%
20,852
+2,241
11
South Derbyshire
England
+10.7%
18,756
15.7%
16,950
+1,806
12
Preston
England
+10.6%
26,375
16.0%
23,847
+2,528
13
Stratford-on-Avon
England
+10.4%
20,760
14.0%
18,808
+1,952
14
Rushcliffe
England
+10.3%
20,143
15.8%
18,261
+1,882
15
Knowsley
England
+10.2%
26,495
16.2%
24,048
+2,447
16
Warwick
England
+9.8%
22,894
14.5%
20,853
+2,041
17
Bassetlaw
England
+9.7%
18,655
14.8%
17,011
+1,644
18
South Cambridgeshire
England
+9.4%
29,414
16.8%
26,886
+2,528
19
South Holland
England
+9.2%
14,559
14.5%
13,335
+1,224
20
Medway
England
+8.9%
50,673
17.3%
46,531
+4,142
Lowest values: School-age population aged 5–17
Lowest values for School-age population aged 5–17
Rank
Council area
Nation
Change
2025 cohort
2025 share
2021 cohort
People change
1
Westminster
England
-17.4%
18,203
8.6%
22,033
-3,830
2
Kensington and Chelsea
England
-14.8%
14,258
9.8%
16,729
-2,471
3
Lambeth
England
-12.0%
34,483
11.0%
39,184
-4,701
4
Camden
England
-11.9%
23,337
10.8%
26,482
-3,145
5
Newham
England
-9.4%
54,269
14.4%
59,919
-5,650
6
Hackney
England
-8.8%
36,035
13.5%
39,496
-3,461
7
Tower Hamlets
England
-8.7%
41,365
12.4%
45,302
-3,937
8
Hammersmith and Fulham
England
-8.4%
20,867
11.0%
22,785
-1,918
9
Southwark
England
-8.4%
37,731
12.1%
41,184
-3,453
10
Haringey
England
-7.0%
36,637
13.8%
39,413
-2,776
11
Islington
England
-6.5%
23,727
10.6%
25,378
-1,651
12
Lewisham
England
-6.5%
42,530
14.1%
45,466
-2,936
13
Brent
England
-5.3%
50,251
14.3%
53,047
-2,796
14
Wandsworth
England
-4.8%
38,810
11.4%
40,746
-1,936
15
Enfield
England
-4.4%
58,081
17.6%
60,764
-2,683
16
Greenwich
England
-4.4%
44,727
14.9%
46,775
-2,048
17
Ealing
England
-4.1%
56,361
14.6%
58,788
-2,427
18
Waltham Forest
England
-3.7%
42,018
14.8%
43,644
-1,626
19
Brighton and Hove
England
-3.5%
34,214
12.0%
35,468
-1,254
20
Gwynedd
Wales
-3.4%
15,960
13.3%
16,513
-553
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.