
Dillonvale
- County:
- Jefferson County
- County Seat:
- No
- Area (mi²):
- 0.386
- State:
- Ohio
Dillonvale is a village located in Jefferson County, Ohio. Dillonvale has a 2025 population of 589. Dillonvale is currently declining at a rate of -0.84% annually and its population has decreased by -4.07% since the most recent census, which recorded a population of 614 in 2020.
The average household income in Dillonvale is $48,698 with a poverty rate of 17.86%. The median age in Dillonvale is 45.7 years: 48.5 years for males, and 43.8 years for females.