Below is a list of Marmaduke AR zip codes. For your research we have also included Marmaduke Area Code, Time Zone, UTC and the local Greene County FIPS Code. Each Marmaduke Arkansas zip code has a center Longitude / Latitude point (the Marmaduke center is -90.3853 / 36.1882). For your convenience we have also indicated if that zip code in Marmaduke observes Daylight Savings time. For more information on Marmaduke Arkansas you will find helpful business links and searches.