Siena is a distinctive girls' name in United States, ranking #644 in 2015 with 445 recorded births. This places Siena in the top 3% of ranked US girls' names for the year. Its actual usage is classified as Uncommon. The name reached its all-time peak in 2018 with 496 births ranking #611. Since 1996, the popularity has increased by 368.4%. In 2015, approximately 1 in every 4,010 girls born was named Siena. STABLE Recent data shows the name is currently stable.