Where is Zip Code 20189 map for 2020, 2019Primary Zip Codes for 20189Zip CodePrimary CitySecondary City20189DullesCities sharing Zip Codes with 20189Zip CodePrimary CitySecondary CityMore Information20166SterlingDulles20163SterlingDulles20101DullesDulles20102DullesDulles20103DullesDulles20104DullesDulles20199DullesDullesAdvertisements