Hutchinson Island South is a census-designated place (CDP) on the barrier island of Hutchinson Island in St. Lucie County, Florida, United States. As of the 2020 census, Hutchinson Island South had a population of 4,988. It is part of the Port St. Lucie Metropolitan Statistical Area. Its mail is delivered from Jensen Beach 34957 in nearby Martin County. The Jensen Beach post office has a postal contract substation known as Hutchinson Beach located at 11007 South Ocean Drive, but it offers only post office boxes and counter services.
Geography
According to the United States Census Bureau, the CDP has a total area of , of which is land and (90.62%) is water.
Transportation
The primary road is South Ocean Drive, which is also known as State Road A1A and passes from north to south through the community.
Demographics
2020 census
As of the 2020 census, Hutchinson Island South had a population of 4,988. The median age was 70.7 years. 2.1% of residents were under the age of 18 and 68.6% of residents were 65 years of age or older. For every 100 females there were 87.9 males, and for every 100 females age 18 and over there were 87.4 males age 18 and over.
100.0% of residents lived in urban areas, while 0.0% lived in rural areas.
There were 2,947 households in Hutchinson Island South, of which 3.5% had children under the age of 18 living in them. Of all households, 52.6% were married-couple households, 15.8% were households with a male householder and no spouse or partner present, and 26.7% were households with a female householder and no spouse or partner present. About 37.5% of all households were made up of individuals and 28.0% had someone living alone who was 65 years of age or older.