Trumbull County

Trumbull County is an administrative county in northeastern Ohio covering roughly 2,400 square kilometers across the Mahoning Valley region. The area includes Mosquito Lake State Park and numerous other natural areas scattered throughout its landscape.

The county was established in 1800 and named after Jonathan Trumbull, who served as Governor of Connecticut during the American Revolutionary War. This naming honors a significant figure from the nation's early independence period.

The Warren area holds museums, theaters, and galleries where local art and regional heritage are on display for visitors to explore. These spaces show how the community values its creative traditions and local stories.

Warren, the county seat, contains administrative offices, medical facilities, and educational institutions including the Kent State University Trumbull campus. Visitors can find the main services and institutions that serve the county in this central location.

Among all Ohio counties, Trumbull stands alone as perfectly square in shape, with each side measuring exactly 40 kilometers in length. This geometric distinction sets it apart from other administrative regions within the state.

Location: Ohio

Inception: July 10, 1800

Capital city: Warren

Reference: TRU

Shares border with: Crawford County, Mercer County, Ashtabula County, Mahoning County, Portage County, Geauga County

Website: http://co.trumbull.oh.us

GPS coordinates: 41.32000,-80.76000

Latest update: December 17, 2025 08:24