| View |
Annexation |
Frazer Township-East Deer Township 1936 Annexation |
yes |
Feb 6, 1936 |
indirect |
| View |
Boundary Realignment |
Huston Township-Patton Township 1941 Boundary Ascertainment |
yes* |
Jan 17, 1941 |
indirect |
| View |
Boundary Realignment |
Lebanon Township-Mount Pleasant Township Proposed 1943 Boundary Ascertainment |
no |
1943–1944 |
indirect |
| View |
Annexation |
Upper Saint Clair Township-Scott Township 1948 Annexation |
yes |
Apr 14, 1948 |
indirect |
| View |
Boundary Realignment |
Morgan Township-Washington Township 1949 Boundary Ascertainment |
yes* |
1948–1949 |
indirect |
| View |
Boundary Realignment |
Conemaugh Township-Jenner Township 1950 Boundary Ascertainment |
yes |
Mar 27, 1950 |
indirect |
| View |
Annexation |
North Shenango Township-Conneaut Township 1950 Annexation |
yes* |
Sep 7, 1950 |
indirect |
| View |
Annexation |
Indiana Township-Shaler Township Proposed 1950 Annexation |
no* |
1950–1953 |
indirect |
| View |
Boundary Realignment |
Elk Lick Township-Summit Township 1955 Boundary Ascertainment |
yes* |
1952–1955 |
indirect |
| View |
Boundary Realignment |
Connoquenessing Township-Franklin Township 1961 Boundary Realignment |
yes |
Nov 22, 1961 |
indirect |
| View |
Boundary Realignment |
Buckingham Township-Preston Township 1962 Boundary Ascertainment |
yes |
May 15, 1962 |
indirect |
| View |
Boundary Realignment |
McCalmont Township-Young Township Proposed 1961 Boundary Ascertainment |
no |
1961–1963 |
indirect |
| View |
Boundary Realignment |
Center Township-Franklin Township Proposed 1965 Boundary Realignment |
unknown |
1965–1966 |
indirect |
| View |
Boundary Realignment |
Moon Township-North Fayette Township 1966 Boundary Realignment |
yes |
Jul 28, 1966 |
indirect |
| View |
Annexation |
West Manchester Township-West York Borough 1967 Annexation |
yes |
Mar 16, 1967 |
indirect |
| View |
Boundary Realignment |
Abington Township-Glenburn Township 1968 Boundary Realignment |
yes |
Apr 8, 1968 |
indirect |
| View |
Boundary Realignment |
Coolspring Township-Jackson Township 1969 Boundary Ascertainment |
yes |
Feb 20, 1969 |
indirect |
| View |
Boundary Realignment |
Quemahoning Township-Shade Township Proposed 1970 Boundary Ascertainment |
unknown |
1970–1972 |
indirect |
| View |
Boundary Realignment |
Middlecreek Township-Milford Township-Jefferson Township 1973 Boundary Ascertainment |
yes |
Sep 5, 1973 |
indirect |
| View |
Annexation |
South Annville Township-South Londonderry Township 1974 Annexation |
yes |
May 31, 1974 |
indirect |
| View |
Boundary Realignment |
East Lackawannock Township-Jefferson Township-Lackawannock Township 1974 Boundary Ascertainment |
yes |
Dec 30, 1974 |
indirect |
| View |
Boundary Realignment |
Fairview Township-Newberry Township 1975 Boundary Ascertainment |
yes |
Nov 12, 1975 |
indirect |
| View |
Boundary Realignment |
Franklin Township-Morgan Township 1977 Boundary Ascertainment |
yes* |
1976–1977 |
indirect |
| View |
Boundary Realignment |
Clark Borough-Hermitage Township-Jefferson Township 1977 Boundary Ascertainment |
yes |
Mar 14, 1977 |
indirect |
| View |
Boundary Realignment |
Lehigh County 1979 Township Boundary Realignment |
yes |
Feb 21, 1979 |
indirect |
| View |
Boundary Realignment |
North Whitehall Township-Washington Township 1981 Boundary Ascertainment |
yes |
Oct 9, 1981 |
indirect |
| View |
Boundary Realignment |
North Hopewell Township-Winterstown Borough 1982 Boundary Realignment |
yes* |
Feb 17, 1982 |
indirect |
| View |
Boundary Realignment |
Findlay Township-Moon Township 1989 Boundary Ascertainment |
yes* |
1986–1989 |
indirect |
| View |
Boundary Realignment |
Lower Milford Township 1990 Boundary Ascertainment |
yes |
Oct 22, 1990 |
indirect |
| View |
Annexation |
Lower Salford Township-Franconia Township 1990 Annexation |
yes |
Dec 13, 1990 |
indirect |
| View |
Boundary Realignment |
Boggs Township-Snow Shoe Township 1992 Boundary Ascertainment |
yes* |
1991–1992 |
indirect |
| View |
Boundary Realignment |
Apolacon Township-Little Meadows Borough 1993 Boundary Ascertainment |
yes |
Oct 14, 1993 |
indirect |
| View |
Boundary Realignment |
Marion Township-Spring Township Proposed 1997 Boundary Ascertainment |
no |
1997–2002 |
indirect |
| View |
Annexation |
Upper Providence Township-Perkiomen Township 2003 Annexation |
yes |
Jul 1, 2003 |
indirect |
| View |
Boundary Realignment |
Marion Township-Spring Township 2005 Boundary Ascertainment |
yes* |
2004–2005 |
indirect |
| View |
Boundary Realignment |
Bethel Township-North Lebanon Township 2005 Boundary Ascertainment |
yes |
Apr 12, 2005 |
indirect |
| View |
Annexation |
Allen Township-Northampton Borough 2006 Annexation |
yes |
Mar 10, 2006 |
indirect |
| View |
Boundary Realignment |
Chambersburg Borough-Guilford Township to Greene Township 2007 Boundary Realignment |
yes |
Aug 28, 2007 |
indirect |
| View |
Annexation |
London Grove Township-New Garden Township 2010 Annexation |
yes |
Sep 7, 2010 |
indirect |
| View |
Boundary Realignment |
Dickinson Township-South Middleton Township 2012 Boundary Ascertainment |
yes |
Mar 12, 2012 |
indirect |
| View |
Boundary Realignment |
Falls Township-Tullytown Borough 2014 Boundary Ascertainment |
yes |
Apr 9, 2014 |
indirect |
| View |
Boundary Realignment |
Cussewago Township-Hayfield Township 2015 Boundary Ascertainment |
yes* |
Nov 16, 2015 |
indirect |
| View |
Boundary Realignment |
College Township-Ferguson Township-Harris Township 2015 Boundary Ascertainment |
yes |
Dec 30, 2015 |
indirect |
| View |
Boundary Realignment |
Adams Township-Richland Township 2017 Boundary Ascertainment |
yes |
Mar 30, 2017 |
indirect |
| View |
Annexation |
Dallas Borough-Dallas Township 2017 Annexation |
yes |
Sep 5, 2017 |
indirect |
| View |
Boundary Realignment |
Boggs Township-Snow Shoe Township 2018 Boundary Ascertainment |
yes |
Mar 23, 2018 |
indirect |
| View |
Boundary Realignment |
Antrim Township-Guilford Township 2019 Boundary Realignment |
yes |
Feb 14, 2019 |
indirect |