20171 is zip code located in Herndon, Virginia. The population is 46,201, making 20171 the largest zipcode in Herndon and the 2nd largest in Fairfax County.
There are 6 public schools in 20171 with an average Homefacts rating of A. The total crime rate for Herndon is moderate , and there are 16 registered sex offenders residing in the zip code 20171. Unemployment in 20171 is low.