
Adena
- County:
- Jefferson County
- County Seat:
- No
- Area (mi²):
- 0.537
- State:
- Ohio
Adena is a village located in Jefferson County, Ohio. Adena has a 2025 population of 634. Adena is currently declining at a rate of -0.94% annually and its population has decreased by -4.52% since the most recent census, which recorded a population of 664 in 2020.
The average household income in Adena is $57,012 with a poverty rate of 13.89%. The median age in Adena is 41.8 years: 44.4 years for males, and 36.9 years for females.