<page_title> Elk Township, New Jersey </page_title> <section_title> Demographics </section_title> <table> <cell> 1990 <col_header> Historical population </col_header> <col_header> Census </col_header> </cell> <cell> 3,806 <col_header> Historical population </col_header> <col_header> Pop. </col_header> </cell> <cell> 2000 <col_header> Historical population </col_header> <col_header> Census </col_header> </cell> <cell> 3,514 <col_header> Historical population </col_header> <col_header> Pop. </col_header> </cell> <cell> −7.7% <col_header> Historical population </col_header> <col_header> %± </col_header> </cell> <cell> 2010 <col_header> Historical population </col_header> <col_header> Census </col_header> </cell> <cell> 4,216 <col_header> Historical population </col_header> <col_header> Pop. </col_header> </cell> <cell> 20.0% <col_header> Historical population </col_header> <col_header> %± </col_header> </cell> </table>
As of the 2010 United States Census, the Elk township's population was 4,216, reflecting an increase of +20.0% from the 3,514 counted in the 2000 Census, which had in turn declined by -7.7% from the 3,806 counted in the 1990 Census.