Siena is a distinctive girls' name in United States, ranking #610 in 2025 with 479 recorded births. The name reached its all-time peak in 2018 with 496 births ranking #611. Since 1996, the popularity has increased by 404.2%. In 2025, approximately 1 in every 3,355 girls born was named Siena. STABLE Recent data shows the name is currently stable.