<page_title> Pima County, Arizona </page_title> <section_title> Demographics </section_title> <table> <cell> 2000 <col_header> Historical population </col_header> <col_header> Census </col_header> </cell> <cell> 843,746 <col_header> Historical population </col_header> <col_header> Pop. </col_header> </cell> </table>
As of the 2000 census, there were 843,746 people residing in the Pima County, Arizona.