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Welcome to the Jefferson County, Alabama information portal. The Jefferson County Commission is proud to serve a vibrant, diverse community rich in history, culture and natural beauty.
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. [3] Its county seat is Birmingham . [1]
Jun 2, 2023 · Jefferson County is governed by an elected five-member commission and includes 36 incorporated communities, including the county seat of Birmingham. Founding Date: December 13, 1819. Area: 1,119 square miles. Population: 658,615 (2020 Census estimate) Major Waterways: Black Warrior River, Cahaba River.
Named after Thomas Jefferson, the main author of the Declaration of Independence and third President of the United States, Jefferson County was founded in 1819 by the Alabama Legislature. Home to nearly 660,000 residents, Jefferson County is Alabama’s most populated county.
Jefferson County is home to Alabama’s largest city, Birmingham, and is the most populous county in the state. Numerous sites in the county provide visitors with opportunities to learn more about the history of Alabama, from its industrial revolution in the late nineteenth century to the civil rights movement of the 1960s.
