Siera is a distinctive girls' name in United States, ranking #5088 in 2010 with 28 recorded births. The name reached its all-time peak in 1998 with 150 births ranking #1225. Since 1996, the popularity has decreased by 81.2%. In 2010, approximately 1 in every 63,476 girls born was named Siera. FALLING Recent data shows the name is currently falling.