Roslyn Harbor is located in Nassau County, New York. There are roughly 1,924 residents, living in 723 households. The average temperature for Roslyn Harbor this time of the year is low of 66F and high of 83F. On average, Roslyn Harbor gets about 4.38 inches of precipitation in July. Most residents are home owners (77%), have a post secondary degree (66%) and are single, no kids (36%).
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