<page_title> List of United States rapid transit systems by ridership </page_title> <table> <cell> New York City Subway <col_header> System </col_header> </cell> <cell> Chicago "L" <col_header> System </col_header> </cell> <cell> 3. <col_header>  </col_header> </cell> <cell> Washington Metro <col_header> System </col_header> </cell> <cell> 229,595,700 <col_header> Annual ridership (2017) </col_header> </cell> <cell> 760,200 <col_header> Avg. weekday ridership (Q4 2017) </col_header> </cell> </table>
Metro is the third-busiest rapid transit system in the United States in number of passenger trips, after the New York City Subway and Chicago "L".