Syndey is a distinctive girls' name in United States, ranking #8959 in 2007 with 14 recorded births. The name reached its all-time peak in 2001 with 30 births ranking #4193. Since 1996, the popularity has decreased by 17.6%. In 2007, approximately 1 in every 137,318 girls born was named Syndey. FALLING Recent data shows the name is currently falling.