Cynthia is a moderately popular girls' name in United States, ranking #169 in 2001 with 1,921 recorded births. The name reached its all-time peak in 1996 with 3,189 births ranking #101. Since 1996, the popularity has decreased by 39.8%. In 2001, approximately 1 in every 937 girls born was named Cynthia. FALLING Recent data shows the name is currently falling.