Sia
Sia was the 1107th most popular name for girls in 2025, given to 215 babies. That is its highest rank since records began in 1880. Over the last ten years it has moved up 535 places. More babies were named Sia in the 2020s than in any other decade.
Meaning Not yet researched how we research meanings
- Rank in 2025
- #1,107 girls, up 179 places since 2020
- Babies in 2025
- 215girls
- Girls and boys
- Almost always a girl’s name2021–2025
- Peak year
- 2025215 babies
- Total since 1880
- 2,795babies recorded
Sia popularity since 1880
A few boys are given the name too: 5 since 1991.
| Year | Rank (girls) | Babies (girls) |
|---|---|---|
| 2025 | #1,107 | 215 |
| 2020 | #1,286 | 174 |
| 2010 | #2,750 | 65 |
| 2000 | — | — |
| 1990 | #7,245 | 12 |
| 1980 | #6,263 | 11 |
| 1970 | — | — |
| 1960 | — | — |
| 1950 | — | — |
| 1940 | — | — |
| 1930 | — | — |
| 1920 | — | — |
| 1910 | — | — |
| 1900 | — | — |
| 1890 | — | — |
| 1880 | — | — |
How popular is Sia, counting every spelling?
Sia is the most common spelling of a name family that ranked #1,059 for girls in 2025 once every spelling is counted together, compared with #1,107 for Sia on its own. Together these spellings went to 215 girls in 2025.
| Spelling | Babies 2025 | Official rank | Babies 2021–2025 |
|---|---|---|---|
| Sia | 215 | #1,107 | 945 |
Spellings count together when they sound the same in American English and are used for the same sex; nicknames and forms that sound different (such as Theo and Theodore) are kept apart. How we group spellings.
How many kids will share the name Sia?
215 of the 3,606,400 babies born in the US in 2025 were named Sia (0.06 per 1,000 births). For a girl named Sia born in 2025, the chance that another child with the same name is in a class of 20 children the same age is under 1 in 50. If every grade liked the name as much as the 2025 babies do, only about one elementary school in 39 (of 430 pupils) would have a child named Sia.
Shares of all registered births (NCHS); classes assumed to be children born the same year. How we estimate this.
How old are people named Sia?
About 2,800 people born in the US named Sia are alive today, with a median age of 8; half are between 4 and 16. That makes Sia a young name: most people with it are children.
Babies given the name each year (SSA) times the share of that birth year still alive (SSA life tables). Counts people born in the US only. Method.
Sia by state
How common Sia was among girls born in each state in 2021–2025. It is notably more common than nationally in Washington (3.7×), New Jersey (2.5×), California (2.0×), Massachusetts (2.0×), New York (1.6×). In 36 states fewer than five girls a year got the name, too few for SSA to publish, so those states show as zero.
Names with a similar history
These names rose and fell in step with Sia: their share of US girls followed the most similar curve since 1880. If you like Sia, they share its era and feel.
Questions about the name Sia
How popular is the name Sia?
Sia was the 1107th most popular name for girls in 2025, given to 215 babies. That is its highest rank since records began in 1880. Over the last ten years it has moved up 535 places. More babies were named Sia in the 2020s than in any other decade.
Is Sia a boy or girl name?
In 2021–2025, almost always a girl’s name given the name Sia in the US.
Where is Sia most popular?
In 2021–2025, Sia was most common in Washington (0.44 per 1,000 girls), followed by New Jersey and California.