Kelly is a moderately popular girls' name in United States, ranking #479 in 2015 with 675 recorded births. This places Kelly in the top 3% of ranked US girls' names for the year. Its actual usage is classified as Moderately Popular. The name reached its all-time peak in 1996 with 4,734 births ranking #73. Since 1996, the popularity has decreased by 85.7%. In 2015, approximately 1 in every 2,644 girls born was named Kelly. FALLING Recent data shows the name is currently falling.