Sydnee is a distinctive girls' name in United States, ranking #579 in 2001 with 441 recorded births. The name reached its all-time peak in 2003 with 506 births ranking #549. Since 1996, the popularity has increased by 54.2%. In 2001, approximately 1 in every 4,083 girls born was named Sydnee. FALLING Recent data shows the name is currently falling.