Kacy is a distinctive girls' name in United States, ranking #2023 in 2005 with 93 recorded births. The name reached its all-time peak in 1996 with 141 births ranking #1240. Since 1996, the popularity has decreased by 34.0%. In 2005, approximately 1 in every 19,868 girls born was named Kacy. STABLE Recent data shows the name is currently stable.