Cidney is a distinctive girls' name in United States, ranking #5471 in 2008 with 26 recorded births. The name reached its all-time peak in 1999 with 58 births ranking #2479. Since 1996, the popularity has decreased by 25.7%. In 2008, approximately 1 in every 72,720 girls born was named Cidney. FALLING Recent data shows the name is currently falling.