<page_title> Irwin, Pennsylvania </page_title> <section_title> Demographics </section_title> <table> <cell> 1900 <col_header> Historical population </col_header> <col_header> Census </col_header> </cell> <cell> 2,452 <col_header> Historical population </col_header> <col_header> Pop. </col_header> </cell> <cell> 1910 <col_header> Historical population </col_header> <col_header> Census </col_header> </cell> <cell> 2,886 <col_header> Historical population </col_header> <col_header> Pop. </col_header> </cell> </table>
In 1900, the population of Irwin numbered 2,452, and it increased to 2,886 in 1910.