Bay County is a county on the Emerald Coast in Northwest Florida. As of the 2020 census, the population was 175,216. Its county seat is Panama City.

The Emerald Coast is an unofficial name for the coastal area in the US state of Florida on the Gulf of Mexico that stretches about 100 miles (160 km) through five counties, Escambia, Santa Rosa, Okaloosa, Walton, and Bay, which include Pensacola Beach, Navarre Beach, Fort Walton Beach, Destin, and Panama City Beach. Some south Alabama communities on the coast of Baldwin County, such as Gulf Shores, Orange Beach, and Fort Morgan embrace the term as well.