11787 is zip code located in Smithtown, New York. The population is 35,969, making 11787 the largest zipcode in Smithtown and the 10th largest in Suffolk County.
There are 9 public schools in 11787 with an average Homefacts rating of A-. , and there are 2 registered sex offenders residing in the zip code 11787. Unemployment in 11787 is moderate.
Zip codes within Smithtown include 11745.