
Deemston
- County:
- Greene County
- County Seat:
- No
- Area (mi²):
- 9.589
- State:
- Pennsylvania
Deemston is a borough located in Greene County, Pennsylvania. Deemston has a 2025 population of 736. Deemston is currently declining at a rate of -0.41% annually and its population has decreased by -2.26% since the most recent census, which recorded a population of 753 in 2020.
The average household income in Deemston is $115,322 with a poverty rate of 4.38%. The median age in Deemston is 46.5 years: 49.6 years for males, and 45.9 years for females.