Sydnee is a distinctive girls' name in United States, ranking #7852 in 2025 with 14 recorded births. The name reached its all-time peak in 2003 with 506 births ranking #549. Since 1996, the popularity has decreased by 95.1%. In 2025, approximately 1 in every 114,805 girls born was named Sydnee. FALLING Recent data shows the name is currently falling.