Siera is a distinctive girls' name in United States, ranking #1490 in 1999 with 116 recorded births. The name reached its all-time peak in 1998 with 150 births ranking #1225. Since 1996, the popularity has decreased by 22.1%. In 1999, approximately 1 in every 15,291 girls born was named Siera. FALLING Recent data shows the name is currently falling.