The table displays the 31 smallest of the cities in the United Kingdom across three measures. Most of these appear in all three of the following categories:
Lichfield, Hereford and Salisbury, in addition to being some of the smallest cities in England, are among the most populous civil parishes.
The least populous cities on all of British territory are Jamestown in St Helena, Ascension and Tristan da Cunha (pop. 629) and Hamilton in Bermuda (pop. 854).
| City | County/ | Area (body/locale) [a] | Body [a] | Area (locale) [b] | Locale/ body % | Census population | Country | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rank | sq mi (km2) | Rank | sq mi (km2) | Rank (2011) | 2021 | 2011 | 2001 | |||||
| City of London | City of London | 1 | 1.12 (2.90) | County | 3 | — | — | 2 | 8,583 | 7,375 | 7,185 [1] | England |
| Wells | Somerset | 2 | 2.11 (5.46) | Parish | 4 | 1.35 (3.50) | 63.99% | 3 | 11,145 | 10,536 | 10,406 [2] | England |
| St Asaph | Denbighshire | 3 | 2.49 (6.45) | Community | 2 | 0.50 (1.29) | 20.19% | — | 3,485 | 3,355 [c] | 3,491 [c] | Wales |
| Bangor | Gwynedd | 4 | 2.79 (7.23) | Community | 5 | 1.65 (4.27) | 59.20% | 5 | 15,060 | 16,358 [3] | 13,725 [4] | Wales |
| Ripon | North Yorkshire | 5 | 3.83 (9.92) | Parish | 7 | 1.97 (5.10) | 51.36% | 6 | 16,590 | 16,702 [5] | 15,922 [6] | England |
| Armagh | County Armagh | 6 | — | None | 11 | 3.97 (10.28) | — | 4 | 14,749 | 14,590 | Northern Ireland | |
| Chichester | West Sussex | 7 | 4.12 (10.67) | Parish | 9 | 3.32 (8.60) | 80.77% | 9 | 29,407 | 26,795 | 23,731 [7] | England |
| Truro | Cornwall | 8 | 4.15 (10.75) | Parish | 8 | 2.83 (7.33) | 68.25% | 7 | 21,046 | 18,766 | 17,431 [8] | England |
| Lichfield | Staffordshire | 9 | 5.41 (14.01) | Parish | 10 | 3.35 (8.68) | 61.84% | 11 | 32,580 | 32,219 | 27,900 [9] | England |
| Newry | County Armagh/Down | 10 | — | None | 16 | 5.43 (14.06) | — | 10 | TBC | 26,967 | 27,433 [c] | Northern Ireland |
| Perth | Perth & Kinross | 11 | — | None | 19 | 6.71 (17.38) | — | — | TBC | 46,970 [c] [10] | 43,450 [c] | Scotland |
| Salisbury | Wiltshire | 12 | 7.14 (18.49) | Parish | 12 | 4.36 (11.29) | 61.04% | 12 | 41,552 | 40,302 | 39,726 | England |
| Lisburn | County Antrim | 13 | — | None | 20 | 7.53 (19.50) | — | 13 | TBC | 45,370 [13] | 71,465 [c] | Northern Ireland |
| Bangor | County | 14 | — | None | 21 | 7.55 (19.55) | — | — | 61,011 [c] | 58,388 [c] | Northern Ireland | |
| Hereford | Herefordshire | 15 | 7.85 (20.33) | Parish | 17 | 6.58 (17.04) | 83.82% | 15 | 53,113 | 58,896 [14] | 50,154 [15] | England |
| Stirling | Stirling | 16 | — | None | 23 | 7.91 (20.49) | — | 14 | TBC | 45,750 | 45,115 [c] | Scotland |
| City of Westminster | Greater London | 17 | 8.29 (21.47) | District | 24 | — | — | — | 204,236 | 219,396 | 181,286 | England |
| Inverness | Highland | 18 | — | None | — | 10.28 (26.63) | — | 16 | TBC | 61,235 | 71,000 | Scotland |
| Carlisle | Cumbria | 19 | 10.38 (26.88) [d] | Trustee | 22 | 7.76 (20.10) | 74.75% | 23 | 74,428 | 107,524 | 100,739 | England |
| Dunfermline | Fife | 20 | — | None | — | 10.85 (28.10) | — | — | 68,426 [18] [c] | 39,320 [19] [c] | Scotland | |
| Worcester | Worcestershire | 21 | 12.85 (33.28) | District | — | 9.52 (24.66) | 74.12% | 22 | 103,872 | 98,768 | 93,353 [20] | England |
| Derry | County | 22 | — | None | — | 13.10 (33.93) | — | 18 | TBC | 85,016 | 83,652 | Northern Ireland |
| Lincoln | Lincolnshire | 23 | 13.78 (35.69) | District | — | 12.61 (32.66) | 91.48% | 20 | 103,813 | 93,541 | 85,595 [21] | England |
| St Davids | Pembrokeshire | — | 17.88 (46.31) | Community | 1 | 0.23 (0.596) | 1.29% | 1 | 1,751 | 1,841 | 1,797 [22] | Wales |
| Ely | Cambridgeshire | — | 22.86 (59.21) | Parish | 6 | 1.84 (4.77) | 8.04% | 8 | 20,574 | 20,256 | 15,102 [23] | England |
| City of Bath | Somerset | — | 28.68 (74.28) [e] | Trustee | — | 11.07 (28.67) | — | 19 | 97,066 | 88,859 | 83,992 [24] | England |
| City of Canterbury | Kent | — | 119.25 (308.86) | District | 15 | 5.09 (13.18) | 4.27% | — | 157,432 | 151,145 | 135,278 | England |
| City of Durham | County Durham | — | 186.68 (483.50) [f] | Trustee | 14 | 4.96 (12.85) | — | 21 | 101,372 | 94,375 | 87,709 [30] | England |
| Wrexham | Wrexham | — | 194.51 (503.78) | District | 18 | 6.70 (17.35) | 3.45% | — | 135,117 [c] | 134,884 [c] | 128,476 [c] | Wales |
| City of Winchester | Hampshire | — | 255.20 (660.96) | District | 13 | 4.76 (12.33) | 1.86% | 24 | 127,444 | 116,595 | 107,222 | England |
| City of Chester | Cheshire | — | 448.04 (1,160.42) [g] | Trustee | — | 9.85 (25.51) | — | 17 | TBC | 79,645 [31] | 77,040 [32] | England |