Siera is a distinctive girls' name in United States, ranking #7699 in 2013 with 16 recorded births. The name reached its all-time peak in 1998 with 150 births ranking #1225. Since 1996, the popularity has decreased by 89.3%. In 2013, approximately 1 in every 109,651 girls born was named Siera. FALLING Recent data shows the name is currently falling.