<page_title> Marin County, California </page_title> <section_title> 2010 </section_title> <table> <cell> 2010 <col_header> Historical population </col_header> <col_header> Census </col_header> </cell> <cell> 252,409 <col_header> Historical population </col_header> <col_header> Pop. </col_header> </cell> </table>
The 2010 United States Census reported that Marin County had a population of 252,409.