Cidney is a distinctive girls' name in United States, ranking #5269 in 2007 with 27 recorded births. The name reached its all-time peak in 1999 with 58 births ranking #2479. Since 1996, the popularity has decreased by 22.9%. In 2007, approximately 1 in every 71,202 girls born was named Cidney. FALLING Recent data shows the name is currently falling.