Billboard Country Airplay is a music chart that ranks the most popular country songs in the United States based on radio airplay. The chart is compiled by Billboard magazine and reflects the number of times songs are played on country radio stations across the country. The rankings are updated weekly and take into account various factors, including the number of spins and audience reach. This chart serves as a key indicator of a song's popularity within the country music genre and is often used by artists and record labels to gauge success and trends in the industry.