Sierah is a distinctive girls' name in United States, ranking #12507 in 1999 with 7 recorded births. The name reached its all-time peak in 1996 with 19 births ranking #5259. Since 1996, the popularity has decreased by 63.2%. In 1999, approximately 1 in every 253,397 girls born was named Sierah. FALLING Recent data shows the name is currently falling.