Siera is a distinctive girls' name in United States, ranking #2345 in 2006 with 81 recorded births. The name reached its all-time peak in 1998 with 150 births ranking #1225. Since 1996, the popularity has decreased by 45.6%. In 2006, approximately 1 in every 23,470 girls born was named Siera. FALLING Recent data shows the name is currently falling.