Siera is a distinctive girls' name in United States, ranking #3213 in 2008 with 53 recorded births. The name reached its all-time peak in 1998 with 150 births ranking #1225. Since 1996, the popularity has decreased by 64.4%. In 2008, approximately 1 in every 35,674 girls born was named Siera. FALLING Recent data shows the name is currently falling.