Cydney is a distinctive girls' name in United States, ranking #1682 in 2007 with 131 recorded births. The name reached its all-time peak in 1998 with 227 births ranking #921. Since 1996, the popularity has decreased by 38.2%. In 2007, approximately 1 in every 14,675 girls born was named Cydney. STABLE Recent data shows the name is currently stable.