<page_title> Hillside, 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> 21,044 <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> 21,747 <col_header> Historical population </col_header> <col_header> Pop. </col_header> </cell> <cell> 3.3% <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> 21,404 <col_header> Historical population </col_header> <col_header> Pop. </col_header> </cell> <cell> −1.6% <col_header> Historical population </col_header> <col_header> %± </col_header> </cell> </table>
As of the 2010 Census, the Hillside, New Jersey population was 21,404, reflecting a decline of 343 (-1.6%) from the 21,747 counted in the 2000 Census, which had in turn increased by 703 (+3.3%) from the 21,044 counted in the 1990 Census.