Below is a list of Olive Branch IL zip codes. For your research we have also included Olive Branch Area Code, Time Zone, UTC and the local Alexander County FIPS Code. Each Olive Branch Illinois zip code has a center Longitude / Latitude point (the Olive Branch center is -89.3536 / 37.1674). For your convenience we have also indicated if that zip code in Olive Branch observes Daylight Savings time. For more information on Olive Branch Illinois you will find helpful business links and searches.