Lake Ronkonkoma, New York
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Lake Ronkonkoma is a census-designated place (CDP) in Suffolk County, New York, United States. The population was 20,155 at the 2010 census.Lake Ronkonkoma is mainly located in the Town of Brookhaven, but has small sections in the Town of Smithtown and the Town of Islip.Sachem High School North is located in Lake Ronkonkoma.