Below is a list of Black Rock AR zip codes. For your research we have also included Black Rock Area Code, Time Zone, UTC and the local Lawrence County FIPS Code. Each Black Rock Arkansas zip code has a center Longitude / Latitude point (the Black Rock center is -91.1354 / 36.1233). For your convenience we have also indicated if that zip code in Black Rock observes Daylight Savings time. For more information on Black Rock Arkansas you will find helpful business links and searches.