Sian
Sian was the 4123rd most popular name for boys in 2025, given to 26 babies. That is its highest rank since records began in 1880. More babies were named Sian in the 2000s than in any other decade.
Meaning Not yet researched how we research meanings
- Rank in 2025
- #4,123 boys, up 2,860 places since 2020
- Babies in 2025
- 26boys
- Girls and boys
- 34% girls, 66% boys2021–2025
- Peak year
- 202526 babies
- Total since 1880
- 1,030babies recorded
Sian popularity since 1880
| Year | Rank (girls) | Rank (boys) | Babies (girls) | Babies (boys) |
|---|---|---|---|---|
| 2025 | #16,925 | #4,123 | 5 | 26 |
| 2020 | #7,522 | #6,983 | 15 | 12 |
| 2010 | #16,691 | #11,981 | 6 | 6 |
| 2000 | #6,763 | #10,168 | 16 | 6 |
| 1990 | #7,246 | — | 12 | — |
| 1980 | #6,711 | — | 10 | — |
| 1970 | #6,959 | — | 7 | — |
| 1960 | — | — | — | — |
| 1950 | — | — | — | — |
| 1940 | — | — | — | — |
| 1930 | — | — | — | — |
| 1920 | — | — | — | — |
| 1910 | — | — | — | — |
| 1900 | — | — | — | — |
| 1890 | — | — | — | — |
| 1880 | — | — | — | — |
How popular is Sian, counting every spelling?
Sian has no other common spelling that sounds the same.
How many kids will share the name Sian?
26 of the 3,606,400 babies born in the US in 2025 were named Sian (0.01 per 1,000 births). For a boy named Sian 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 323 (of 430 pupils) would have a child named Sian.
Shares of all registered births (NCHS); classes assumed to be children born the same year. How we estimate this.
How old are people named Sian?
About 200 people born in the US named Sian are alive today, with a median age of 7; half are between 3 and 16. That makes Sian 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.
Sian by state
How common Sian was among boys born in each state in 2021–2025. In 50 states fewer than five boys 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 Sian: their share of US boys followed the most similar curve since 1880. If you like Sian, they share its era and feel.
Questions about the name Sian
How popular is the name Sian?
Sian was the 4123rd most popular name for boys in 2025, given to 26 babies. That is its highest rank since records began in 1880. More babies were named Sian in the 2000s than in any other decade.
Is Sian a boy or girl name?
In 2021–2025, 34% girls, 66% boys given the name Sian in the US.
Where is Sian most popular?
In 2021–2025, Sian was most common in Florida (0.01 per 1,000 boys).