
Plain Grove township
- County:
- Lawrence County
- County Seat:
- No
- Area (mi²):
- 17.393
- State:
- Pennsylvania
Plain Grove township is located in Lawrence County, Pennsylvania. Plain Grove township has a 2025 population of 751. Plain Grove township is currently declining at a rate of -0.53% annually and its population has decreased by -3.22% since the most recent census, which recorded a population of 776 in 2020.
The average household income in Plain Grove township is $107,614 with a poverty rate of 6.96%. The median age in Plain Grove township is 39.9 years: 39.1 years for males, and 43.3 years for females.