Wabash County is a county located in the northern central part of the U.S. state of Indiana. As of 2020, the population was 30,976. The county seat is Wabash.

Wabash is a city in Noble Township, Wabash County, in the U.S. state of Indiana. The population was 10,666 at the 2010 census. The city is situated along the Wabash River in the county seat of Wabash County.