Cidney is a distinctive girls' name in United States, ranking #5745 in 2009 with 24 recorded births. The name reached its all-time peak in 1999 with 58 births ranking #2479. Since 1996, the popularity has decreased by 31.4%. In 2009, approximately 1 in every 76,536 girls born was named Cidney. FALLING Recent data shows the name is currently falling.