Keilly is a distinctive girls' name in United States, ranking #5232 in 2000 with 22 recorded births. This places Keilly in the top 30% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2011 with 48 births ranking #3382. In 2000, approximately 1 in every 82,544 girls born was named Keilly. STABLE Recent data shows the name is currently stable.