Sydnee is a distinctive girls' name in United States, ranking #540 in 2000 with 482 recorded births. The name reached its all-time peak in 2003 with 506 births ranking #549. Since 1996, the popularity has increased by 68.5%. In 2000, approximately 1 in every 3,768 girls born was named Sydnee. FALLING Recent data shows the name is currently falling.