Below is a list of West Islip NY zip codes. For your research we have also included West Islip Area Code, Time Zone, UTC and the local Suffolk County FIPS Code. Each West Islip New York zip code has a center Longitude / Latitude point (the West Islip center is -73.298500061035 / 40.709400177002). For your convenience we have also indicated if that zip code in West Islip observes Daylight Savings time.