B tops the ranking, with 2,029,280 residents, ahead of BT and S. The full ranking is below, each entry linked to its page.

# Area Population
1 B 2,029,280
2 BT 1,903,168
3 S 1,389,843
4 M 1,273,372
5 G 1,234,779
6 NG 1,224,637
7 NE 1,194,876
8 E 1,115,466
9 LE 1,085,679
10 SE 1,072,396
11 CF 1,036,235
12 BS 1,034,255
13 PE 972,223
14 EH 941,243
15 SW 902,522
16 CV 898,644
17 L 894,335
18 N 887,822
19 RG 860,296
20 PO 856,232
21 BN 836,968
22 LS 835,424
23 DE 776,317
24 GU 770,481
25 DN 765,457
26 NR 760,960
27 NN 741,676
28 SA 740,249
29 TN 713,435
30 CM 705,508
31 SO 695,021
32 CH 680,512
33 OX 677,806
34 ME 665,013
35 ST 662,559
36 GL 657,438
37 WA 642,096
38 IP 635,565
39 SK 623,907
40 TS 614,826
41 BD 605,124
42 EX 602,184
43 MK 591,275
44 RM 585,315
45 YO 582,767
46 RH 582,554
47 BH 579,161
48 NW 574,910
49 PL 564,940
50 KT 564,162
51 PR 549,923
52 SS 546,677
53 WF 546,561
54 LL 542,227
55 TW 541,703
56 W 537,770
57 HA 534,958
58 HP 533,359
59 BB 515,977
60 AB 510,701

Source: ONS Census 2021. Compiled by Postcodes UK.

Frequently asked questions

Which UK postcode area has the most residents?

B tops the list, with 2,029,280 residents, followed by BT and S.

How is this ranking measured?

This ranking is based on ONS Census 2021.