Kacy is a distinctive girls' name in United States, ranking #8594 in 2025 with 12 recorded births. The name reached its all-time peak in 1996 with 141 births ranking #1240. Since 1996, the popularity has decreased by 91.5%. In 2025, approximately 1 in every 133,939 girls born was named Kacy. STABLE Recent data shows the name is currently stable.