Siera is a distinctive girls' name in United States, ranking #1515 in 2000 with 121 recorded births. The name reached its all-time peak in 1998 with 150 births ranking #1225. Since 1996, the popularity has decreased by 18.8%. In 2000, approximately 1 in every 15,008 girls born was named Siera. FALLING Recent data shows the name is currently falling.