<page_title> Marengo, Iowa </page_title> <section_title> Demographics </section_title> <table> <cell> 2000 <col_header> Historical population </col_header> <col_header> Census </col_header> </cell> <cell> 2,535 <col_header> Historical population </col_header> <col_header> Pop. </col_header> </cell> <cell> 2010 <col_header> Historical population </col_header> <col_header> Census </col_header> </cell> <cell> 2,528 <col_header> Historical population </col_header> <col_header> Pop. </col_header> </cell> </table>
The Marengo's population was 2,528 in the 2010 census, a decline from 2,535 in 2000.