Sierah is a distinctive girls' name in United States, ranking #6127 in 1997 with 16 recorded births. The name reached its all-time peak in 1996 with 19 births ranking #5259. Since 1996, the popularity has decreased by 15.8%. In 1997, approximately 1 in every 108,791 girls born was named Sierah. FALLING Recent data shows the name is currently falling.