This is a guide to the size of settlements in Anglesey based on the data from the article on each town. The entire population of Anglesey is 69,700 (2011 census).
| Rank | Settlement | Population (2011) |
|---|---|---|
| 1 | Holyhead | 11,431 |
| 2 | Llangefni | 5,116 |
| 3 | Amlwch | 3,789 |
| 4 | Llanfair Mathafarn Eithaf | 3,382 |
| 5 | Menai Bridge | 3,376 |
| 6 | Llanfairpwllgwyngyll | 3,107 |
| 7 | Valley | 2,361 [1] |
| 8 | Beaumaris | 1,938 [2] |