Tallahassee (/ ˌ t æ l ə ˈ h æ s i / TAL-ə-HASS-ee) is the capital city of the U.S. state of Florida.It is the county seat and only incorporated municipality in Leon County.Tallahassee became the capital of Florida, then the Florida Territory, in 1824.In 2020, the population was 196,169, making it the 8th-largest city in the U.S state of Florida, and the 126th-largest city in the United ...