What are the Ocosta, Washington Zip Codes for 2020, 2019Primary Zip Codes for OcostaZip CodePrimary CitySecondary City98520AberdeenOcosta, Aberdeen Gardens, Central Park, Markham, Bay City, Bench Drive, Junction City, South Aberdeen, WishkahCities sharing Zip Codes with OcostaZip CodePrimary CitySecondary CityMore Information98520AberdeenBay City98520AberdeenBench Drive98520AberdeenJunction City98520AberdeenOcosta98520AberdeenSouth Aberdeen98520AberdeenWishkah98520AberdeenAberdeen Gardens Aberdeen Gardens population stats 98520AberdeenCentral Park Central Park population stats 98520AberdeenMarkham Markham population stats Advertisements