Today 20171, Herndon VA is count around 22 homes for sale at current average listing price of $755,735. Nearby neighborhoods of 20171 are Dulles Technology, Discovery Square, None Available, Metropark At Arrowbrook, Copper Crossing South, Franklin Farm, Liberty Park, Mcnair Farms, Monterey Estates, Oakmill. Most of 20171 homes are 3 bedrooms with 3 bathrooms.