Ambridge is a borough in Beaver County, Pennsylvania, United States. Incorporated in 1905 as a company town by the American Bridge Company, Ambridge is located 16 miles (25 km) northwest of Pittsburgh, along the Ohio River. The population was 6,972 at the 2020 census.

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.