Holtsville is located in Suffolk County, NY. The population is 20,793.
There are 0 public schools in Holtsville with an average Homefacts rating of A-. The total crime rate for Holtsville is very low , and there are 1 registered sex offenders residing in the city. Unemployment in Holtsville is moderate and the median home sales price is $0. Detailed and up-to-date Holtsville property reports are available for any property address.
Cities near Holtsville include Holbrook, Farmingville and North Patchogue.