Below is a list of Water Mill NY zip codes. For your research we have also included Water Mill Area Code, Time Zone, UTC and the local Suffolk County FIPS Code. Each Water Mill New York zip code has a center Longitude / Latitude point (the Water Mill center is -73.957702636719 / 41.12979888916). For your convenience we have also indicated if that zip code in Water Mill observes Daylight Savings time.