<page_title> List of localities in Wales by population </page_title> <table> <cell> Wrexham <col_header> Built-up area </col_header> </cell> <cell> Merthyr Tydfil <col_header> Built-up area </col_header> </cell> <cell> Barry <col_header> Built-up area </col_header> </cell> <cell> 54,673 <col_header> Population 2016 Estimate </col_header> </cell> </table>
According to Office for National Statistics 2016 estimate data, the population of Barry was 54,673, coming in behind Wrexham and Merthyr Tydfil.