Steubenville, Ohio is located in Jefferson County. Jefferson County is situated in the eastern part of the state, near the border with West Virginia. It is part of the Appalachian region and covers an area of approximately 410 square miles. The county is named after Thomas Jefferson, the third President of the United States.

Steubenville is the county seat of Jefferson County and is the largest city within the county. It is known for its rich history, particularly in the steel and coal industries. The city is also famous for being the birthplace of Dean Martin, a renowned singer and actor. Steubenville offers a variety of attractions and amenities, including parks, museums, and a vibrant downtown area.