Below is a list of Lavaca AR zip codes. For your research we have also included Lavaca Area Code, Time Zone, UTC and the local Sebastian County FIPS Code. Each Lavaca Arkansas zip code has a center Longitude / Latitude point (the Lavaca center is -94.1682 / 35.3371). For your convenience we have also indicated if that zip code in Lavaca observes Daylight Savings time. For more information on Lavaca Arkansas you will find helpful business links and searches.