Region
Chester County (Pa.)
Chester County
4
Pennsylvania
4
Lancaster County (Pa.)
3
Berks County (Pa.)
2
Bucks County (Pa.)
2
Montgomery County (Pa.)
2
Ailston (Pa.)
1
Bucks County
1
Chesapeake and Delaware Canal (Del. and Md.)
1
Elkton
1
Elkton (Md.)
1
Lancaster County
1
Maryland
1
Montgomery County
1
Peach Bottom (Pa. : Township)
1
Philadelphia (Pa.)
1
Philadelphia County (Pa.)
1
Salem County (N.J.)
1
York County (Pa.)
1