Trumbull County
Also known as Trumbull County, Ohio, Trumbull County, OH
county in Ohio, United States
Key facts
- Country
- United States
- State
- Ohio
- Founded
- July 10, 1800
- Named after
- Jonathan Trumbull
- Seat
- Warren
- Largest city
- Warren
- Total
- 637 sq mi (1,650 km )
- Land
- 618 sq mi (1,600 km )
- Water
- 18 sq mi (47 km ) 2.9%
- Estimate 2025
- 198,972
- Density
- 324/sq mi (125/km )
- Time zone
- UTC−5 ( Eastern )
- Summer dst
- UTC−4 ( EDT )
Article
Trumbull County is located in the far northeast portion of the U.S. state of Ohio. As of the 2020 census, the population was 201,977. Its county seat and largest city is Warren, which developed industry along the Mahoning River. Trumbull County is part of the Youngstown–Warren, OH Metropolitan Statistical Area.
History