Trumbull County, OH
Following the United States' victory in its Revolutionary War, the British were forced to cede this land to the new nation. The federal government convinced Connecticut to give up its claim to the land, but it was known as part of the Connecticut Western Reserve in the Northwest Territory. Connecticut retained sovereignty over some of the eastern portion of what became Ohio, selling this area in 1795 to the Connecticut Land Company, a speculative private development firm. As first organized, Trumbull County consisted of the entire area of the Connecticut Western Reserve before population increased, and it was divided into smaller counties.
The county is named for Jonathan Trumbull, Governor of Connecticut, who once owned the land in this region. Early settlements were made along the Mahoning River and other waterways, which provided transportation access and water power to the industries that developed later in the 19th century.
The county was founded in 1800.
Modern Day Adjacent Counties
Crawford County, Pennsylvania
Mercer County, Pennsylvania