Cynthia is a distinctive girls' name in United States, ranking #1014 in 2025 with 247 recorded births. The name reached its all-time peak in 1996 with 3,189 births ranking #101. Since 1996, the popularity has decreased by 92.3%. In 2025, approximately 1 in every 6,507 girls born was named Cynthia. FALLING Recent data shows the name is currently falling.