Hereford is an unincorporated community in Cochise County along the San Pedro Riparian National Conservation Area in the southern part of the U.S. state of Arizona. It is south of Sierra Vista and is a part of the Sierra Vista-Douglas micropolitan area. The elevation is 4,193 feet. The community was named after B.J. Hereford, who was a friend of the town's founder. It was where cowboys Frank and Tom McLaury first met and became associated with Ike Clanton, in 1878. The two brothers would later be killed during the Gunfight at the OK Corral, in Tombstone, Arizona, with Ike Clanton being at the center of that dispute with the Earp faction. The area is known for its wildlife and outdoor activities. Hundreds of birds and butterflies migrate through this area year round. The Arizona Folklore Preserve and the Coronado National Memorial are located in Hereford. The Lehner Mammoth-Kill Site, a National Historic Landmark, is located nearby.