| Fallowfield, Pennsylvania | |
| Settlement Type: | Unincorporated community |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Pennsylvania |
| Subdivision Type2: | County |
| Subdivision Name2: | Washington |
| Unit Pref: | Imperial |
| Population As Of: | 2000 |
| Population Density Km2: | auto |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Blank Name: | FIPS code |
| Blank1 Name: | GNIS feature ID |
Fallowfield Township is an unincorporated community in Washington County, Pennsylvania, United States. It was the sixth township to be established after the 1781 formation of Washington County, and initially stretched from Elrama north to the Ten Mile Creek in what became Union and East Bethlehem townships on the Monongahela River. Home to the John H. Nelson House, which was built, the township was gradually downsized as various sections were sectioned off into new municipalities (Allen, Carroll, Pike Run, and Somerset townships and the borough of Charleroi). Roughly in size, its population was 4,300, according to the 2010 U.S. Census.[1]