Sia is a distinctive girls' name in United States, ranking #3154 in 2008 with 54 recorded births. This places Sia in the top 15% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2025 with 215 births ranking #1107. Since 1996, the popularity has increased by 350.0%. In 2008, approximately 1 in every 35,013 girls born was named Sia. RISING Recent data shows the name is currently rising.