Cydney is a distinctive girls' name in United States, ranking #915 in 1997 with 218 recorded births. This places Cydney in the top 6% of ranked US girls' names for the year. Its actual usage is classified as Uncommon. The name reached its all-time peak in 1998 with 227 births ranking #921. In 1997, approximately 1 in every 7,985 girls born was named Cydney. STABLE Recent data shows the name is currently stable.