KJMM signed on in 1987. It was owned by Elliott-Phelps Broadcasting Corporation and used the facilities of the former KIKX, a noted Top 40 station on 580 AM in Tucson. KIKX signed off the air five years earlier after its license was revoked. In 1990, KJMM became KSAZ and relocated to Marana.
Prior to March 1, 2009, it was airing country music format courtesy of ABC Radio's Real Country satellite feed. Prior to September 1, 2008, it was airing an adult standards format.