Sydne is a distinctive girls' name in United States, ranking #14674 in 2011 with 7 recorded births. The name reached its all-time peak in 1996 with 59 births ranking #2278. Since 1996, the popularity has decreased by 88.1%. In 2011, approximately 1 in every 251,258 girls born was named Sydne. FALLING Recent data shows the name is currently falling.