Ronkonkoma, New York

Ronkonkoma ( ) is a hamlet and census-designated place (CDP) located within the Town of Islip, in Suffolk County, on Long Island, in New York, United States. The population was 18,955 at the time of the 2020 census.

The Ronkonkoma post office has the ZIP Code 11779 and serves the CDP along with portions of several adjacent hamlets and CDPs.

The hamlet is also home to Long Island MacArthur Airport, which is owned and operated by the Town of Islip. The New York Air Route Traffic Control Center is located at the airport.