Sydne is a distinctive girls' name in United States, ranking #3262 in 2000 with 42 recorded births. The name reached its all-time peak in 1996 with 59 births ranking #2278. Since 1996, the popularity has decreased by 28.8%. In 2000, approximately 1 in every 43,237 girls born was named Sydne. FALLING Recent data shows the name is currently falling.