| Town Name | District | Unitary Authority | County | Population | Area Size (Ha) | |
|---|---|---|---|---|---|---|
| Jacobstow | North Cornwall | - | Cornwall | 421 | - | Map |
| Jacobstowe | West Devon | - | Devon | 118 | - | Map |
| Jarrow | South Tyneside | - | Durham | 29017 | 784 | Map |
| Jentnor | - | Isle of Wight | Hampshire | 5986 | 233 | Map |
| Jersey | Jersey | - | Channel Islands | - | - | Map |
| Jesmond | Newcastle upon Tyne | - | Northumberland | - | - | Map |
| Jevington | Wealden | - | Sussex | 6218 | - | Map |
| Jodrell Bank | Macclesfield | - | Cheshire | - | - | Map |
| Johnby | Eden | - | Cumbria | - | - | Map |
| Jordans | Chiltern | - | Buckinghamshire | - | - | Map |
| Jurby | - | - | Isle of Man | - | - | Map |