| District | Successor |
|---|---|
| Aethwy Rural District | Anglesey |
| Amlwch Urban District | Anglesey |
| Beaumaris Borough | Anglesey |
| Holyhead Urban District | Anglesey |
| Llangefni Urban District | Anglesey |
| Menai Bridge Urban District | Anglesey |
| Twrcelyn Rural District | Anglesey |
| Valley Rural District | Anglesey |
Read more about this topic: List Of Rural And Urban Districts In Wales In 1973