
Guyan township
- County:
- Gallia County
- County Seat:
- No
- Area (mi²):
- 31.538
- State:
- Ohio
Guyan township is located in Gallia County, Ohio. Guyan township has a 2025 population of 1,120. Guyan township is currently declining at a rate of -0.09% annually and its population has decreased by -0.8% since the most recent census, which recorded a population of 1,129 in 2020.
The average household income in Guyan township is $95,569 with a poverty rate of 13.71%. The median age in Guyan township is 38.3 years: 38.2 years for males, and 39 years for females.