Cybil is a distinctive girls' name in United States, ranking #9317 in 2000 with 10 recorded births. The name reached its all-time peak in 2015 with 12 births ranking #9074. Since 1996, the popularity has increased by 100.0%. In 2000, approximately 1 in every 181,597 girls born was named Cybil. FALLING Recent data shows the name is currently falling.