Garden City South is a hamlet and census-designated place (CDP) in the Town of Hempstead, Nassau County, New York, United States.

[3] According to the U.S. Census Bureau, the CDP has a total area of 0.4 square miles (1.0 km2), all land.

The median household income was $146,346 and those with a bachelor's degree or Higher at 49.1% and an employment Rate of 62.4%.

Race and ethnicity population reported in the 2020 census are as follows: White alone: 3260, Black or African descent: 46, American Indian and Alaska Native alone: 8, Asian alone: 348, and some other race alone: 181.

18.0% of all households were made up of individuals, and 11.2% had someone living alone who was 65 years of age or older.