Foster township
- County:
- McKean County
- County Seat:
- No
- Area (mi²):
- 46.165
- State:
- Pennsylvania
Foster township is located in McKean County, Pennsylvania. Foster township has a 2026 population of 3,897. Foster township is currently declining at a rate of -0.31% annually and its population has decreased by -3.49% since the most recent census, which recorded a population of 4,038 in 2020.
The median household income in Foster township is $70,362 with a poverty rate of 9.84%. The median age in Foster township is 48.4 years: 45.4 years for males, and 51.4 years for females. For every 100 females there are 100.5 males.