Baden is a borough in southeastern Beaver County, Pennsylvania, along the Ohio River. The population was 3,904 at the 2020 census. It is part of the Pittsburgh metropolitan area. Baden is the former site of Logstown, a significant Native American settlement.

Beaver County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 168,215. Its county seat is Beaver, and its largest city is Aliquippa. The county is part of the Greater Pittsburgh region of the state.