Cai is a distinctive girls' name in United States, ranking #10376 in 2002 with 9 recorded births. The name reached its all-time peak in 2020 with 38 births ranking #3788. Since 1996, the popularity has increased by 50.0%. In 2002, approximately 1 in every 199,647 girls born was named Cai. FALLING Recent data shows the name is currently falling.