This is a guide to the size of settlements in Anglesey based on 2021 census data. The entire population of Anglesey is 68,878.

RankSettlementPopulation (2021)1Holyhead11,7602Llangefni5,2613Amlwch3,1474Menai Bridge3,0465Llanfairpwllgwyngyll2,9076Benllech2,072 7Valley2,005 8Gaerwen1,279

References 2021 Census