Mobile County is located in the southwestern corner of Alabama and is the second most populous county in the state. The county seat is Mobile, which is also the largest city in the county. The county was established in 1812.

The government of Mobile County is composed of a five-member County Commission, which is elected from single-member districts. The Commission is responsible for setting the county's budget, levying taxes, and making policy decisions. The county is also served by a Circuit Court, District Court, and Probate Court.

The economy of Mobile County is largely based on the Port of Mobile, which is the ninth-largest port in the United States. The port is a major hub for international trade and is home to several major industries, including shipbuilding, steel production, and chemical manufacturing. The county is also home to several military installations, including the Brookley Aeroplex and the Mobile Regional Airport.

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