About Holtsville, NY
Holtsville is located in New York. Holtsville, New York has a population of 13,086. Holtsville is less family-centric than the surrounding county with 29% households with children. The county percentage for households with children is 30%.
The median household income in Holtsville, New York is $100,085. The median household income for the surrounding county is $97,267 compared to the national median of $61,963. The median age of people living in Holtsville is 41.9 years.
The average high temperature in July is 82.8 degrees, with an average low temperature in January of 22.1 degrees. The annual precipitation is 50.27.
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