Sidnie is a distinctive girls' name in United States, ranking #4799 in 1997 with 22 recorded births. The name reached its all-time peak in 2001 with 27 births ranking #4549. Since 1996, the popularity has increased by 37.5%. In 1997, approximately 1 in every 79,121 girls born was named Sidnie. STABLE Recent data shows the name is currently stable.