Sydne is a distinctive girls' name in United States, ranking #5212 in 2006 with 27 recorded births. The name reached its all-time peak in 1996 with 59 births ranking #2278. Since 1996, the popularity has decreased by 54.2%. In 2006, approximately 1 in every 70,410 girls born was named Sydne. FALLING Recent data shows the name is currently falling.