
Triadelphia
- County:
- Ohio County
- County Seat:
- No
- Area (mi²):
- 0.673
- State:
- West Virginia
Triadelphia is a town located in Ohio County, West Virginia. Triadelphia has a 2025 population of 637. Triadelphia is currently declining at a rate of -1.09% annually and its population has decreased by -5.07% since the most recent census, which recorded a population of 671 in 2020.
The average household income in Triadelphia is $65,247 with a poverty rate of 19.55%. The median age in Triadelphia is 46.3 years: 46.2 years for males, and 46.4 years for females.