Kayci is a distinctive girls' name in United States, ranking #3368 in 2000 with 40 recorded births. The name reached its all-time peak in 1998 with 51 births ranking #2677. Since 1996, the popularity has increased by 17.6%. In 2000, approximately 1 in every 45,399 girls born was named Kayci. FALLING Recent data shows the name is currently falling.