The station signed on September 5, 1967, as the market's third television outlet. It has been affiliated with CBS since the beginning. Before its launch, the network had previously been carried on KVTV (channel 9, now KCAU-TV) from 1953 until 1967. That station switched its affiliation to ABC on September 2, 1967, and Siouxland was briefly without a CBS affiliate until KMEG signed on three days later. KMEG was started by a group of local investors led by Bob and Norma Donovan. Its call letters were selected in honor of their daughter Meg who would later pass away.