<page_title> Grant County, Washington </page_title> <section_title> Demographics </section_title> <table> <cell> 2010 <col_header> Historical population </col_header> <col_header> Census </col_header> </cell> <cell> 89,120 <col_header> Historical population </col_header> <col_header> Pop. </col_header> </cell> <cell> U.S. Decennial Census 1790–1960 1900–1990 1990–2000 2010–2018 <col_header> Historical population </col_header> <col_header> Census </col_header> <col_header> Pop. </col_header> <col_header>  </col_header> <col_header> %± </col_header> </cell> </table>
As of the 2010 United States Census, 89,120 people were residing in the Grant county.