Lake Ronkonkoma Heights Zip Code Zip Codes in Lake Ronkonkoma Heights, New York Zip Code Area Code 11779 631 Get Map Schools in Lake Ronkonkoma Heights Cherokee Street Elementary School (K-5) Edith L. Slocum Elementary School (K-5) Gatelot Avenue School (K-5, UE) Helen B. Duffield Elementary School (K-5) Hiawatha School (K-5, UE) Ronkonkoma Middle School (6-8) Sachem High School North (9-12, US) Samoset Middle School (6-8, US)

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