Dulles 20189 2025. Zip code 20189 in dulles va, loudoun county, area codes 571, 703, maps, population, businesses, geography, statistics, schools, home values. Population density is 524.59 persons per square mile.
Browse photos, floor plans, reviews, and more to find your next perfect home. Zip code 20189 in dulles va, loudoun county, area codes 571, 703, maps, population, businesses, geography, statistics, schools, home values.