The first station to receive a commercial license was KDKA in Pittsburgh, which began broadcasting in October of 1920. From these rudimentary early broadcasts, the new medium grew rapidly. In 1922, there were 30 radio stations, but by the following year, there were 556. Now, there are over 15,500 AM and FM radio stations, along with some 1,900 low-power FM facilities.
Profile America is in its 21st year as a public service of the U.S. Census Bureau.
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