Sia Girl
How popular is Sia?
#1,107 girl name in 2025
215 baby girls were named Sia in the US in 2025, making it the 1107th most popular girl name.
Sia popularity over time
Boys Girls
| Rank in 2025 | #1,107 for girls (▲ 163 from 2024) |
|---|---|
| Babies in 2025 | 215 girls |
| 10-year trend | Rising fast (+64% babies vs 2015) |
| Earlier ranks | #1,636 in 2015, #1,282 in 2020 |
| Peak year | 2025 (215 girls) |
| Highest rank | #1,107 in 2025 |
| First recorded | 1968 |
| Boys vs girls (last 10 years) | 0% boys, 100% girls |
| Chance a classmate shares it | 0.2% in a class of 25 kids born in 2025 |
Sia counting every spelling
Social Security counts each spelling as its own name. Adding together the spellings that sound alike, the Sia family of names ranked #961 for girls in 2025 (#1,046 the year before), with 220 babies in all.
| Spelling | Girls in 2025 | Share |
|---|---|---|
| Sia | 215 | 98% |
| Sya | 5 | 2% |
Spellings are grouped by how they sound, using our own rules, so a few groupings may not match how your family says the name.
Where Sia is most popular
Babies named Sia per 1,000 girls born in each state, 2021 to 2025. Darker means more common.
- Washington: 0.4 per 1,000 (63 girls)
- New Jersey: 0.3 per 1,000 (53 girls)
- California: 0.2 per 1,000 (201 girls)
- Massachusetts: 0.2 per 1,000 (28 girls)
- New York: 0.2 per 1,000 (73 girls)
Sia by decade
| Decade | Baby girls | Best rank |
|---|---|---|
| 1960s | 9 | #4,778 |
| 1970s | 57 | #6,338 |
| 1980s | 103 | #3,646 |
| 1990s | 121 | #4,665 |
| 2000s | 355 | #2,823 |
| 2010s | 1,026 | #1,335 |
| 2020s | 1,119 | #1,107 |
Girl names about as popular as Sia
Questions
- Is Sia a boy or girl name?
- Sia is mostly a girl name. Over the last 10 years, 100% of babies named Sia were girls.
- How popular is the name Sia?
- 215 baby girls were named Sia in the US in 2025, making it the 1107th most popular girl name.
- When was Sia most popular?
- Sia peaked in 2025, when 215 girls were given the name. Its highest rank was #1,107 in 2025.
- How many people are named Sia?
- 2,795 babies have been named Sia in the US since 1880. We estimate about 2,775 of them are alive in 2026, with a median age of 8.
- Where is Sia most popular?
- From 2021 to 2025, Sia was most common in Washington, at 0.4 of every 1,000 girls born there.
Source: Social Security Administration baby name data, 1880 to 2025 (names given to at least 5 babies of a sex in a year). Living-people and median-age figures are our estimates using US life tables. How we calculate.