Below is a list of Mendham Township NJ zip codes. For your research we have also included Mendham Township Area Code, Time Zone, UTC and the local Morris County FIPS Code. Each Mendham Township New Jersey zip code has a center Longitude / Latitude point (the Mendham Township center is -74.596641540527 / 40.782238006592). For your convenience we have also indicated if that zip code in Mendham Township observes Daylight Savings time.