Direct answer for Birmingham, AL
Birmingham, Alabama is primarily in Jefferson County. The county seat is Birmingham. This answer is useful for general research, travel planning, local services, county office lookup, and understanding which local government area serves the city.
Birmingham is the county seat of Jefferson County, with limited city area extending into Shelby County. For legal, tax, voting, school, or property decisions, check the exact street address because boundaries can differ from mailing labels.


