Cydney is a distinctive girls' name in United States, ranking #5121 in 2021 with 25 recorded births. The name reached its all-time peak in 1998 with 227 births ranking #921. Since 1996, the popularity has decreased by 88.2%. In 2021, approximately 1 in every 65,588 girls born was named Cydney. STABLE Recent data shows the name is currently stable.