Kelly is a moderately popular girls' name in United States, ranking #336 in 2011 with 944 recorded births. This places Kelly in the top 2% 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 80.1%. In 2011, approximately 1 in every 1,863 girls born was named Kelly. FALLING Recent data shows the name is currently falling.