Sydne is a distinctive girls' name in United States, ranking #11502 in 2008 with 10 recorded births. The name reached its all-time peak in 1996 with 59 births ranking #2278. Since 1996, the popularity has decreased by 83.1%. In 2008, approximately 1 in every 189,072 girls born was named Sydne. FALLING Recent data shows the name is currently falling.