
Smithfield township
- County:
- Jefferson County
- County Seat:
- No
- Area (mi²):
- 37.56
- State:
- Ohio
Smithfield township is located in Jefferson County, Ohio. Smithfield township has a 2025 population of 2,902. Smithfield township is currently declining at a rate of -0.62% annually and its population has decreased by -3.43% since the most recent census, which recorded a population of 3,005 in 2020.
The average household income in Smithfield township is $75,231 with a poverty rate of 13.49%. The median age in Smithfield township is 50.5 years: 56.3 years for males, and 44.6 years for females.