20191 is zip code located in Reston, Virginia. The population is 28,574, making 20191 the largest zipcode in Reston and the 9th largest in Fairfax County.
There are 6 public schools in 20191 with an average Homefacts rating of B+. , and there are 20 registered sex offenders residing in the zip code 20191. Unemployment in 20191 is low.