Castanea township
- County:
- Clinton County
- County Seat:
- No
- Area (mi²):
- 5.506
- State:
- Pennsylvania
Castanea township is located in Clinton County, Pennsylvania. Castanea township has a 2026 population of 1,098. Castanea township is currently declining at a rate of -0.09% annually and its population has decreased by -0.36% since the most recent census, which recorded a population of 1,102 in 2020.
The median household income in Castanea township is $59,545 with a poverty rate of 10.9%. The median age in Castanea township is 43.3 years: 41 years for males, and 44.8 years for females. For every 100 females there are 95.6 males.