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 68,900 (2005 estimate).
| Rank | town/city | Population |
| 1 | Holyhead | 11,237 |
| 2 | Llangefni | 4,499 |
| 3 | Menai Bridge | 3,850 |
| 4 | Amlwch | 3,438 |
| 5 | Llanfairpwllgwyngyll | 3,040 |
| 6 | Benllech | 2,338 |
| 7 | Beaumaris | 2,040 |
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