Below is a list of Mongaup Valley NY zip codes. For your research we have also included Mongaup Valley Area Code, Time Zone, UTC and the local Sullivan County FIPS Code. Each Mongaup Valley New York zip code has a center Longitude / Latitude point (the Mongaup Valley center is -74.786399841309 / 41.66849899292). For your convenience we have also indicated if that zip code in Mongaup Valley observes Daylight Savings time.