<page_title> List of counties in New Mexico </page_title> <section_title> List </section_title> <table> <cell> Bernalillo County <col_header> County </col_header> </cell> <cell> 670,968 <col_header> Population </col_header> <row_header> Bernalillo County </row_header> </cell> </table>
Bernalillo County is the most populous county in New Mexico.