Syndey is a distinctive girls' name in United States, ranking #10822 in 2005 with 10 recorded births. The name reached its all-time peak in 2001 with 30 births ranking #4193. Since 1996, the popularity has decreased by 41.2%. In 2005, approximately 1 in every 184,770 girls born was named Syndey. FALLING Recent data shows the name is currently falling.