<page_title> Jefferson County, West Virginia </page_title> <section_title> Demographics </section_title> <table> <cell> 2000 <col_header> Historical population </col_header> <col_header> Census </col_header> </cell> <cell> 42,190 <col_header> Historical population </col_header> <col_header> Pop. </col_header> </cell> </table>
As of the census of 2000, there were 42,190 people residing in Jefferson County, West Virginia.