They are owned by Bonneville International, a broadcasting subsidiary of the Church of Jesus Christ of Latter-day Saints (LDS).

They and co-owned television station KSL-TV have studios in the Broadcast House building at the Triad Center in downtown Salt Lake City.

KSL is a Class A clear-channel station, broadcasting with 50,000 watts non-directional, the maximum power permitted by the Federal Communications Commission.

Several LDS religious shows are heard on Sunday mornings, including Music & the Spoken Word, airing on KSL continuously since 1929.

KSL-AM-FM carry Brigham Young University Cougars sports and Real Salt Lake soccer games.

[4] On April 21, 1922, the Deseret News, a Salt Lake City newspaper owned by the Church of Jesus Christ of Latter-day Saints (LDS), was issued a license for a new station on both broadcasting wavelengths.

[12] On March 24, 1925, the call letters were changed from KFPT to KSL, and the frequency to 1000 kHz,[13] with the "S" and "L" standing for "Salt Lake".

)[14] Earl J. Glade (later a four-term mayor of Salt Lake City) joined the station in 1925 and guided KSL's operations for the next fourteen years.

John F. Fitzpatrick, publisher of The Salt Lake Tribune (owned by the Kearns Corporation) acquired a quarter interest of KSL for a modest price, as did the LDS Church.

The recently formed Federal Radio Commission adopted General Order 40 in 1928, which included 40 "clear channel" allocations, which were assignments providing for high-powered stations with extensive nighttime coverage.

[17] In March 1941, with the implementation of the North American Regional Broadcasting Agreement, KSL was shifted to 1160 kHz, although it maintained its status as a "clear channel" station.

The KSL stations remained subsidiaries of the Deseret News until 1964, when Bonneville International Corporation was formed as the parent company for the LDS Church's broadcasting interests.

This was one of the first U.S. radio talk shows to be syndicated nationally, airing on numerous Mutual Broadcasting System Network stations.

KSL was the flagship station of Brigham Young University's football and men's basketball teams until BYU Radio took over the duties in 2017.

Music & the Spoken Word is a weekly broadcast of The Tabernacle Choir at Temple Square, which is also syndicated nationwide via CBS Radio and television.

In addition, it is one of only two radio shows to be inaugurated into the National Association of Broadcasters' Hall of Fame, along with the Grand Ole Opry.

[23] On Sunday mornings and evenings for more than two decades, the station has broadcast Religion Today with host Martin Tanner.