What are the Duwamish, Washington Zip Codes for 2020, 2019Primary Zip Codes for DuwamishZip CodePrimary CitySecondary City98188SeattleDuwamish, Mcmicken Heights, Riverton, Seatac, TukwilaCities sharing Zip Codes with DuwamishZip CodePrimary CitySecondary CityMore Information98188SeattleDuwamish98188SeattleMcmicken Heights98188SeattleRiverton Riverton population stats 98188SeattleSeatac Seatac population stats 98188SeattleTukwila Tukwila population stats Advertisements