Texas Municipalities and communities of Martin County, Florida, United StatesCounty seat: StuartCity Stuart Towns Jupiter Island Ocean Breeze Sewall's Point Village Indiantown CDPs Hobe Sound Jensen Beach North River Shores Palm City Port Salerno Rio Unincorporatedcommunity Port Mayaca Florida portal United States portal Subcategories This category has the following 4 subcategories, out of 4 total. Census-designated places in Martin County, Florida (2 C, 6 P) Cities in Martin County, Florida (1 C, 1 P) Towns in Martin County, Florida (3 P) Unincorporated communities in Martin County, Florida (1 P)