Cydney is a distinctive girls' name in United States, ranking #1163 in 2002 with 177 recorded births. The name reached its all-time peak in 1998 with 227 births ranking #921. Since 1996, the popularity has decreased by 16.5%. In 2002, approximately 1 in every 10,152 girls born was named Cydney. STABLE Recent data shows the name is currently stable.