Dayton's locale is Ohio, a state located in the Midwestern United States. It is bordered by Michigan to the north, Indiana to the east, West Virginia to the southeast, Kentucky to the southwest, and Pennsylvania and Lake Erie to the northeast. Ohio is the 34th largest state in the United States and the 7th most populous. The capital of Ohio is Columbus, and its largest city is Cleveland. Dayton is the sixth-largest city in Ohio and the county seat of Montgomery County.