Below is a list of Walnut Ridge AR zip codes. For your research we have also included Walnut Ridge Area Code, Time Zone, UTC and the local Lawrence County FIPS Code. Each Walnut Ridge Arkansas zip code has a center Longitude / Latitude point (the Walnut Ridge center is -90.9596 / 36.0907). For your convenience we have also indicated if that zip code in Walnut Ridge observes Daylight Savings time. For more information on Walnut Ridge Arkansas you will find helpful business links and searches.