Kacy is a distinctive girls' name in United States, ranking #3812 in 2012 with 41 recorded births. The name reached its all-time peak in 1996 with 141 births ranking #1240. Since 1996, the popularity has decreased by 70.9%. In 2012, approximately 1 in every 42,945 girls born was named Kacy. STABLE Recent data shows the name is currently stable.