Question: According to the 2010 census, what is the population of the census-designated place where  Heckscher State Parkway crosses New York State Route 27?
Sentence (from "Heckscher State Parkway"): At Islip Terrace, the Heckscher Parkway turns southward, crossing NY 27 before ending at the toll barrier for Heckscher State Park in Great River.
Relevant evidence: Yes