Rio (Florida)

Rio is a census-designated place (CDP) in Martin County, Florida, United States. The population was 1,028 at the 2000 census. Rio is pronounced locally as if it were spelled "Rye-oh." It is part of the Port St. Lucie Metropolitan Statistical Area.GovernmentRio sits in Martin County District 1, which includes parts of Stuart, Jensen Beach, Hutchinson Island, and Sewall's Point.HistoryRio proper was platted as Rio St. Lucie, but the post office established on March 24, 1893 was called Rio San Lucie. On December 1, 1897, the post office name was shortened to Rio. The Rio post office was discontinued on March 15, 1902, with the area being taken over by the post office at Goslingville, which was located on the narrow peninsula just north of the present day Roosevelt Bridge. On April 6, 1904, the Rio post office was reactivated and it continued until October 15, 1927, when it was added to the post office at Jensen now known as Jensen Beach.GeographyRio is located at .According to the United States Census Bureau, the CDP has a total area of 0.9sqmi, of which 0.4sqmi is land and 0.5sqmi is water.