Sydne is a distinctive girls' name in United States, ranking #8051 in 2007 with 16 recorded births. The name reached its all-time peak in 1996 with 59 births ranking #2278. Since 1996, the popularity has decreased by 72.9%. In 2007, approximately 1 in every 120,153 girls born was named Sydne. FALLING Recent data shows the name is currently falling.