Cynthia is a distinctive girls' name in United States, ranking #873 in 2020 with 308 recorded births. The name reached its all-time peak in 1996 with 3,189 births ranking #101. Since 1996, the popularity has decreased by 90.3%. In 2020, approximately 1 in every 5,245 girls born was named Cynthia. FALLING Recent data shows the name is currently falling.