Kacy is a distinctive girls' name in United States, ranking #1692 in 1997 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 1997, approximately 1 in every 18,717 girls born was named Kacy. STABLE Recent data shows the name is currently stable.