Tallahassee is the capital city of the U.S. state of Florida. It is the county seat of and the only incorporated municipality in Leon County. Tallah…Tallahassee is the capital city of the U.S. state of Florida. It is the county seat of and the only incorporated municipality in Leon County. Tallahassee became the capital of Florida, then the Florida Territory, in 1824. In 2022, the estimated population was 201,731, making it the eighth-most populous city in the state of Florida. It is the principal city of the Tallahassee, Florida Metropolitan Statistical Area, which had an estimated population of 390,992 as of 2022. Tallahassee is the largest city in the Florida Big Bend and Florida Panhandle regions.