Below is a list of Port Washington NY zip codes. For your research we have also included Port Washington Area Code, Time Zone, UTC and the local Nassau County FIPS Code. Each Port Washington New York zip code has a center Longitude / Latitude point (the Port Washington center is -73.68270111084 / 40.825199127197). For your convenience we have also indicated if that zip code in Port Washington observes Daylight Savings time.