Sia
Quick answers about Sia
How many people are named Sia?
An estimated 2,762 living Americans are named Sia.
How rare is Sia?
Sia is uncommon among babies today, with 215 girls receiving the name in 2025, matching its recorded peak.
How old is the typical Sia?
The median age of a living American named Sia is approximately 8 years, with most bearers falling between 4 and 16 years old.
Is Sia still popular?
Yes — Sia is currently rising in popularity, with 215 births in 2025. Births this decade are running about 2.6× higher than the previous decade.
Where is Sia most common?
Sia has its strongest geographic signal in Washington, where it appeared 3.5× more often than the national baseline in the 2020s.
Sia is most concentrated in Washington — about 3.5× the national rate in the 2020s. It also runs high in California.
States where Sia is given more often than the national average — its present-day heartland.