Texas Municipalities and communities of Columbia County, Florida, United StatesCounty seat: Lake CityCity Lake City Town Fort White CDPs Five Points Watertown Unincorporatedcommunities Ellisville Lulu Mikesville Florida portal United States portal Subcategories This category has the following 4 subcategories, out of 4 total. Unincorporated communities in Columbia County, Florida (3 P)C Census-designated places in Columbia County, Florida (2 P) Cities in Columbia County, Florida (1 C, 1 P)T Towns in Columbia County, Florida (1 P)