Youngstown is a city in the U.S. state of Ohio and the county seat of Mahoning County. It also extends into Trumbull County. The municipality is on the Mahoning River, approximately 65 miles southeast of Cleveland and 61 miles northwest of Pittsburgh, Pennsylvania. Youngstown has its own metropolitan area, but is often included in commercial and cultural depictions of the Pittsburgh Tri-State area and Greater Cleveland. Youngstown lies 10 miles west of the Pennsylvania state line, midway between New York City and Chicago via Interstate 80. The city was named for John Young, an early settler from Whitestown, New York, who established the community's first sawmill and gristmill. Youngstown is in a region of the United States that is often referred to as the Rust Belt. Traditionally known as a center of steel production, Youngstown was forced to redefine itself when the U.S. steel industry fell into decline in the 1970s, leaving communities throughout the region without major industry. Youngstown also falls within the Appalachian Ohio region, among the foothills of the Appalachian Mountains. The 2010 census showed that Youngstown had a total population of 66,982, making it Ohio's ninth largest city. The city has experienced a decline of over 60% of its population since 1960.