Sierah is a distinctive girls' name in United States, ranking #9994 in 1998 with 9 recorded births. The name reached its all-time peak in 1996 with 19 births ranking #5259. Since 1996, the popularity has decreased by 52.6%. In 1998, approximately 1 in every 196,321 girls born was named Sierah. FALLING Recent data shows the name is currently falling.