Northumberland
| District | Successor |
|---|---|
| Alnwick Rural District | Alnwick |
| Alnwick Urban District | Alnwick |
| Amble Urban District | Alnwick |
| Ashington Urban District | Wansbeck |
| Bedlingtonshire Urban District | Wansbeck |
| Belford Rural District | Berwick-upon-Tweed |
| Bellingham Rural District | Tynedale |
| Berwick-upon-Tweed Borough | Berwick-upon-Tweed |
| Blyth Borough | Blyth Valley |
| Castle Ward Rural District | Castle Morpeth, Newcastle upon Tyne |
| Glendale Rural District | Berwick-upon-Tweed |
| Gosforth Urban District | Newcastle upon Tyne |
| Haltwhistle Rural District | Tynedale |
| Hexham Rural District | Tynedale |
| Hexham Urban District | Tynedale |
| Longbenton Urban District | North Tyneside |
| Morpeth Borough | Castle Morpeth |
| Morpeth Rural District | Castle Morpeth |
| Newbiggin-by-the-Sea Urban District | Wansbeck |
| Newburn Urban District | Newcastle upon Tyne |
| Norham and Islandshires Rural District | Berwick-upon-Tweed |
| Prudhoe Urban District | Tynedale |
| Rothbury Rural District | Alnwick |
| Seaton Valley Urban District | Blyth Valley, North Tyneside |
| Wallsend Borough | North Tyneside |
| Whitley Bay Borough | North Tyneside, Blyth Valley |
Newcastle upon Tyne and Tynemouth were county boroughs.
Read more about this topic: List Of Rural And Urban Districts In England In 1973