How Many People Are Named Sia?
people named Sia are alive in the United States today (estimate)
About 1 in 123,388 people in the US has this name
Based on 2,795 babies named Sia in Social Security records from 1968 to 2025, and the share of each birth year still alive in 2025.
Popularity Rank
💎💎 Very Rare
Peak Year
215 births
Trend
Stable (last 10 years)
⚧ Gender Distribution
Almost all of the babies given the name Sia (99.8%) were girls.
👥 Age Distribution
The average person named Sia alive today is about 11 years old, and 91% are under 30. Half of them were between 3 and 15 in 2025.
📈 Popularity Over Time
Sia first appears in the records in 1968, and 2025 was its biggest year so far, with 215 babies.
Babies given the name each year, 1968 to 2025
🏆 Rank History
Sia has never been one of the 100 most popular girls' names. Its best rank was #1,107, in 2025. In 2025 it ranked #1,107.
| Girls | |
|---|---|
| Rank in 2025 | #1,107 |
| Best rank | #1,107 (2025) |
| Years in the top 100 | None |
| Rank in its biggest decade | #1,251 in the 2020s |
📍 State-Wise Distribution
People named Sia alive today, by the state where they were born (estimate; state records start in 1910).
More people named Sia were born in California than in any other state: about 552 of those alive today. Compared with the national rate in the same years, Sia was given 4.5 times as often in New Jersey, 2.7 times in Washington and 2.3 times in California.
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