Below is a list of Mamaroneck NY zip codes. For your research we have also included Mamaroneck Area Code, Time Zone, UTC and the local Westchester County FIPS Code. Each Mamaroneck New York zip code has a center Longitude / Latitude point (the Mamaroneck center is -73.733001708984 / 40.948699951172). For your convenience we have also indicated if that zip code in Mamaroneck observes Daylight Savings time.