Kayci is a distinctive girls' name in United States, ranking #2677 in 1998 with 51 recorded births. This places Kayci in the top 16% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1998 with 51 births ranking #2677. Since 1996, the popularity has increased by 50.0%. In 1998, approximately 1 in every 34,645 girls born was named Kayci. FALLING Recent data shows the name is currently falling.