Today 20171, Herndon VA is count around 30 homes for sale at current average listing price of $763,425. Nearby neighborhoods of 20171 are Dulles Technology, Metropark At Arrowbrook, Foster's Glen, None Available, Arpina Valley, Ashburton Oaks, Chantilly Highlands, Copper Crossing, Coppermine Crossing, Folkstone. Most of 20171 homes are 3 bedrooms with 3 bathrooms.