Rankin' San Diego

San Diego ranked number 17 in U.S. terrestrial radio-market earnings last year, with the 45 stations in operation generating around $203 million of income. The same Arbitron ratings show the two most-listened-to local stations are KSON-FM/KSOQ-FM country and KIFM jazz. The station with the smallest audience is XHFG-FM, which plays Latin pop. The surveys only represent listenership north of the Mexican border.

According to a BIA Financial Network report, the city's most profitable radio station last year was KOGO-AM, which earned Clear Channel an estimated $14.9 million. Clear Channel's area stations earned around $63.1 million, representing almost a third of all revenue generated by local radio.

Among the top U.S. markets for people who download or listen to music online, San Diego ranks number three, with 21 percent of adults doing so within the past month. Austin and Salt Lake City top the list. The national average is 15 percent.