Delaware County League, also called Delco League, was an Independent League that was based in Pennsylvania.
1905 Norwood, Prospect Park, Ridley Park, Sharon Hill
1906 to 1913 Not Sure if this league played
1914 Chester, Clifton, Media, Upland
1915 Chester, Clifton, Media, Upland
1916 Brill, Chester, Clifton, Media, Paschall, Upland
1917 Chester, Chester-Globe Tire, Media, Upland
1920 Lansdowne, Media, Morton, Rockdale, Upper Darby-Drexel Hill, Upper Darby-Highland Park