Bessemer is a city in Jefferson County, Alabama, United States and a southwestern suburb of Birmingham. The population was 26,019 at the 2020 census. It is within the Birmingham-Hoover, AL Metropolitan Statistical Area, of which Jefferson County is the center. It developed rapidly as an industrial city in the late 19th and early 20th centuries.

Jefferson County is the most populous county in the U.S. state of Alabama, located in the central portion of the state. As of the 2020 census, its population was 674,721. Its county seat is Birmingham. Its rapid growth as an industrial city in the 20th century, based on heavy manufacturing in steel and iron, established its dominance. Jefferson County is the central county of the Birmingham-Hoover, AL Metropolitan Statistical Area.