Sia is a distinctive girls' name in United States, ranking #1691 in 2016 with 127 recorded births. The name reached its all-time peak in 2025 with 215 births ranking #1107. Since 1996, the popularity has increased by 958.3%. In 2016, approximately 1 in every 13,949 girls born was named Sia. RISING Recent data shows the name is currently rising.