| District 1 |
| |
| Team | Mascot | Years |
| |
| Abington | Galloping Ghosts | 1912 - |
| Academy Park | Knights | 1982 - |
| Avondale | | 1909 - 1909 |
| Bensalem | Fighting Owls | 1930 - |
| Bishop Shanahan | Eagles | 1960 - |
| Boyertown | Bears | 1939 - |
| Bridgeport | Dragons | 1930 - 1965 |
| Bristol | Warriors | 1919 - |
| Central Bucks East | Patriots | 1969 - |
| Central Bucks West | Bucks | 1910 - |
| Cheltenham | Panthers | 1901 - |
| Chester | Clippers | 1890 - |
| Chichester | Eagles | 1941 - |
| Clifton Heights | Rams | 1934 - 1971 |
| Coatesville | Red Raiders | 1903 - |
| Collegeville-Trappe | Colonels | 1913 - 1968 |
| Collingdale | Bulldogs | 1926 - 1981 |
| Conestoga | Pioneers | 1897 - |
| Conshohocken | Golden Bears | 1904 - 1965 |
| Conshohocken Archbishop Kennedy | Saints | 1923 - 1993 |
| Council Rock North | Indians | 1919 - |
| Council Rock South | Hawks | 2002 - |
| Darby Township | Eagles | 1964 - 1981 |
| Darby-Colwyn | Rams | 1912 - 1981 |
| Delhaas | Tigers | 1951 - 1980 |
| Downingtown East | Cougars | 2003 - |
| Downingtown West | Whippets | 1896 - |
| East Greenville | | 1917 - 1951 |
| Eddystone | Stoners | 1929 - 1965 |
| Garnet Valley | Jaguars | 1965 - |
| Glen Mills | Battling Bulls | 1906 - |
| Glen-Nor | Indians | 1922 - 1954 |
| Great Valley | Patriots | 1962 - |
| Harriton | Rams | 1958 - |
| Hatboro-Horsham | Hatters | 1926 - |
| Haverford | Fords | 1913 - |
| Interboro | Bucs | 1955 - |
| Jenkintown | Drakes | 1909 - |
| Kennett Square | Blue Demons | 1896 - 1917 |
| Lansdale Catholic | Crusaders | 1953 - |
| Lansdowne-Aldan | Lords | 1901 - 1981 |
| Lower Merion | Aces | 1897 - |
| Lower Moreland | Lions | 1931 - |
| Maple Point | Cougars | 1975 - 1982 |
| Marple-Newtown | Fighting Tigers | 1928 - |
| Media | Mustangs | 1893 - 1965 |
| Methacton | Warriors | 1962 - |
| Morrisville | Bulldogs | 1919 - 2000 |
| Narberth | | 1917 - 1922 |
| Neshaminy | Redskins | 1921 - |
| Nether Providence | Bulldogs | 1928 - 1982 |
| New Hope | | 1927 - 1935 |
| Norristown | Eagles | 1894 - |
| North Penn (Lansdale) | Knights | 1912 - |
| North Wales | | 1923 - 1939 |
| Owen J. Roberts | Wildcats | 1925 - |
| Oxford | Hornets | 1906 - |
| Parkesburg | | 1921 - 1923 |
| Penn Wood | Patriots | 1982 - |
| Penncrest | Lions | 1957 - |
| Pennridge | Rams | 1930 - |
| Pennsburg | | 1923 - 1951 |
| Pennsbury | Falcons | 1930 - |
| Perkasie | | 1912 - 1929 |
| Perkiomen Valley | Vikings | 1969 - |
| Phoenixville | Phantoms | 1894 - |
| Plymouth-Whitemarsh | Colonials | 1954 - |
| Pottsgrove | Falcons | 1943 - |
| Pottstown | Trojans | 1898 - |
| Pottstown Saint Pius X | Winged Lions | 1955 - |
| Prospect Park | Prospectors | 1911 - 1954 |
| Quakertown | Panthers | 1908 - |
| Radnor | Raiders | 1897 - |
| Ridley | Green Raiders | 1934 - |
| Ridley Park | Parkers | 1906 - 1965 |
| Royersford | Eagles | 1897 - 1954 |
| Saint Francis Vocational | | 1940 - 1951 |
| Schwenksville | Bluebirds | 1925 - 1968 |
| Sellersville | | 1908 - 1929 |
| Sharon Hill | Owls | 1931 - 1981 |
| Souderton | Indians | 1921 - |
| Spring City | Pirates | 1902 - 1954 |
| Springfield (Delaware County) | Cougars | 1932 - |
| Springfield (Montgomery County) | Spartans | 1925 - |
| Spring-Ford | Rams | 1955 - |
| Strath Haven | Panthers | 1983 - |
| Sun Valley | Vanguards | 1961 - |
| Swarthmore | Tomahawks | 1901 - 1982 |
| Truman | Tigers | 1981 - |
| Unionville | Indians | 1974 - |
| Upper Darby | Royals | 1913 - |
| Upper Dublin | Cardinals | 1953 - |
| Upper Merion | Vikings | 1930 - |
| Upper Moreland | Golden Bears | 1927 - |
| Upper Perkiomen | Indians | 1952 - |
| West Chester East | Vikings | 1974 - |
| West Chester Henderson | Warriors | 1895 - |
| West Conshohocken | | 1929 - 1930 |
| West Grove | | 1906 - 1911 |
| William Tennent | Panthers | 1944 - |
| Wissahickon | Trojans | 1912 - |
| Woodrow Wilson | Rams | 1959 - 1980 |
| Yardley | | 1930 - 1946 |
| Yeadon | Eagles | 1933 - 1981 |
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