Sierah is a distinctive girls' name in United States, ranking #17317 in 2007 with 6 recorded births. The name reached its all-time peak in 1996 with 19 births ranking #5259. Since 1996, the popularity has decreased by 68.4%. In 2007, approximately 1 in every 320,408 girls born was named Sierah. FALLING Recent data shows the name is currently falling.