
Warren
- County:
- Trumbull County
- County Seat:
- Yes
- Area (mi²):
- 15.956
- State:
- Ohio
Warren is a city located in Trumbull County, Ohio. Warren has a 2025 population of 38,477. It is also the county seat of Trumbull County. Warren is currently declining at a rate of -0.35% annually and its population has decreased by -1.75% since the most recent census, which recorded a population of 39,161 in 2020.
The average household income in Warren is $52,789 with a poverty rate of 32.92%. The median age in Warren is 38.5 years: 37 years for males, and 40.5 years for females.