Sydnee is a distinctive girls' name in United States, ranking #681 in 2004 with 405 recorded births. The name reached its all-time peak in 2003 with 506 births ranking #549. Since 1996, the popularity has increased by 41.6%. In 2004, approximately 1 in every 4,534 girls born was named Sydnee. FALLING Recent data shows the name is currently falling.