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The Mahoning Valley is a geographic valley encompassing the area of northeast Ohio and northwest Pennsylvania that drains into the Mahoning River. The Mahoning River empties into the Beaver River, which empties into the Ohio River. The Mahoning River flows through Lawrence and Mercer counties in Pennsylvania, and Stark, Mahoning, Trumbull, and Portage counties in Ohio. The three main tributaries of the Mahoning River are Mosquito Creek, West Branch, and Eagle Creek, all in Ohio.
The area around Youngstown, Ohio, is often called the Mahoning Valley or the Steel Valley.
- ^ "About US". Steel Valley Voices: An Ethnic Community Archive. Retrieved 2014-03-03.
- Mahoning Valley Historical Society (Ohio) (1876). Historical collections of the Mahoning Valley: containing an account of the two pioneer reunions, together with a selection of interesting facts, traditions, biographical sketches, anecdotes, etc., relating to the sale and settlement of the lands belonging to the Connecticut Land Company, and history and reminiscences, both general and local. Volume 1. Youngstown: Mahoning Valley Historical Society.
- Butler, Joseph G. (1921). History of Youngstown and the Mahoning Valley, Ohio. Chicago: American Historical Society. Retrieved 2014-03-04.