Cai is a distinctive girls' name in United States, ranking #5744 in 2012 with 23 recorded births. The name reached its all-time peak in 2020 with 38 births ranking #3788. Since 1996, the popularity has increased by 283.3%. In 2012, approximately 1 in every 76,554 girls born was named Cai. FALLING Recent data shows the name is currently falling.