Cydney is a distinctive girls' name in United States, ranking #2913 in 2013 with 58 recorded births. The name reached its all-time peak in 1998 with 227 births ranking #921. Since 1996, the popularity has decreased by 72.6%. In 2013, approximately 1 in every 30,249 girls born was named Cydney. STABLE Recent data shows the name is currently stable.