32 cities
| City | 2025 Pop. ↓ |
|---|---|
| Kingston upon Hull | 328,518 |
| Kingswood | 64,793 |
| Kettering | 63,675 |
| Kidderminster | 57,059 |
| Keighley | 50,171 |
| Kirkcaldy | 49,460 |
| Kilmarnock | 46,350 |
| King's Lynn | 46,093 |
| Kirkby | 42,744 |
| Kidsgrove | 29,480 |
| Kendal | 29,147 |
| Kirkby in Ashfield | 27,539 |
| Kenilworth | 22,413 |
| Kempston Hardwick | 20,000 |
| Kingswinford | 20,000 |
| Kempston | 19,873 |
| Kirkintilloch | 19,630 |
| Kilwinning | 16,420 |
| Kippax | 15,965 |
| Kidlington | 15,829 |
| Keynsham | 15,641 |
| Knaresborough | 14,740 |
| Knottingley | 13,804 |
| Kirk Sandall | 13,572 |
| Knutsford | 13,191 |
| Kirkham | 11,915 |
| Kingsteignton | 11,360 |
| Kimberley | 11,273 |
| Kesgrave | 11,020 |
| Knowle | 10,823 |
| Kearsley | 10,127 |
| Kingston upon Thames | 10,001 |