Kaci is a distinctive girls' name in United States, ranking #1570 in 2015 with 140 recorded births. The name reached its all-time peak in 1998 with 281 births ranking #766. Since 1996, the popularity has decreased by 46.8%. In 2015, approximately 1 in every 12,748 girls born was named Kaci. FALLING Recent data shows the name is currently falling.