Texas Municipalities and communities of St. Lucie County, Florida, United StatesCounty seat: Fort PierceCities Fort Pierce Port St. Lucie Towns St. Lucie Village CDPs Fort Pierce North Fort Pierce South Hutchinson Island South Indian River Estates Lakewood Park River Park White City Unincorporated community Viking Florida portal United States portal Subcategories This category has the following 4 subcategories, out of 4 total. Cities in St. Lucie County, Florida (2 C, 2 P)C Census-designated places in St. Lucie County, Florida (7 P)T Towns in St. Lucie County, Florida (1 P)U Unincorporated communities in St. Lucie County, Florida (1 P)