| More than 4,500 | |
| 4,000–4,500 | |
| 3,500–4,000 | |
| 3,000–3,500 | |
| 2,500–3,000 | |
| 2,000–2,500 | |
| 1,500–2,000 | |
| 1,250–1,500 | |
| 1,000–1,250 | |
| 750–1,000 | |
| 500–750 | |
| Fewer than 500 |
Figures are for the 2024 Westminster Parliamentary Constituencies with Census 2021 data for England and Wales, and 2022 data for Scotland