Billi is a distinctive girls' name in United States, ranking #6542 in 1999 with 15 recorded births. The name reached its all-time peak in 1996 with 21 births ranking #4753. Since 1996, the popularity has decreased by 28.6%. In 1999, approximately 1 in every 118,252 girls born was named Billi. RISING Recent data shows the name is currently rising.