Sierra is a moderately popular girls' name in United States, ranking #499 in 2019 with 630 recorded births. The name reached its all-time peak in 1998 with 5,841 births ranking #51. Since 1996, the popularity has decreased by 88.5%. In 2019, approximately 1 in every 2,663 girls born was named Sierra. STABLE Recent data shows the name is currently stable.