Sinclair
Sinclair was the 4740th most popular name for girls in 2025, given to 29 babies. Its best year was 1994, when it ranked 4671st; the most babies were born in 2025 (29). Over the last ten years it has moved up 2,488 places. More babies were named Sinclair in the 1990s than in any other decade.
Meaning Not yet researched how we research meanings
- Rank in 2025
- #4,740 girls, up 6,234 places since 2020
- Babies in 2025
- 29girls
- Girls and boys
- 70% girls, 30% boys2021–2025
- Peak year
- 202529 babies
- Total since 1880
- 1,912babies recorded
Sinclair popularity since 1880
| Year | Rank (girls) | Rank (boys) | Babies (girls) | Babies (boys) |
|---|---|---|---|---|
| 2025 | #4,740 | #6,400 | 29 | 14 |
| 2020 | #10,974 | #8,624 | 9 | 9 |
| 2010 | #19,457 | #7,500 | 5 | 11 |
| 2000 | #7,119 | #11,879 | 15 | 5 |
| 1990 | #12,736 | #3,752 | 6 | 16 |
| 1980 | — | #3,585 | — | 12 |
| 1970 | — | #3,042 | — | 11 |
| 1960 | — | #2,522 | — | 12 |
| 1950 | — | #2,012 | — | 15 |
| 1940 | — | #3,420 | — | 6 |
| 1930 | — | #2,161 | — | 14 |
| 1920 | — | #1,878 | — | 19 |
| 1910 | — | #1,405 | — | 7 |
| 1900 | — | #1,040 | — | 8 |
| 1890 | — | — | — | — |
| 1880 | — | — | — | — |
How popular is Sinclair, counting every spelling?
Sinclair is the most common spelling of a name family that had 42 girls in 2025 across its spellings. Together these spellings went to 42 girls in 2025.
| Spelling | Babies 2025 | Official rank | Babies 2021–2025 |
|---|---|---|---|
| Sinclair | 29 | #4,740 | 110 |
| Sinclaire | 8 | #11,791 | 32 |
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 Sinclair?
29 of the 3,606,400 babies born in the US in 2025 were named Sinclair (0.01 per 1,000 births). For a girl named Sinclair 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 291 (of 430 pupils) would have a child named Sinclair.
Shares of all registered births (NCHS); classes assumed to be children born the same year. How we estimate this.
How old are people named Sinclair?
About 500 people born in the US named Sinclair are alive today, with a median age of 16; half are between 6 and 27. That makes Sinclair mostly worn by children and young adults.
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.
Sinclair by state
How common Sinclair was among girls born in each state in 2021–2025. In 48 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 Sinclair: their share of US girls followed the most similar curve since 1880. If you like Sinclair, they share its era and feel.
Questions about the name Sinclair
How popular is the name Sinclair?
Sinclair was the 4740th most popular name for girls in 2025, given to 29 babies. Its best year was 1994, when it ranked 4671st; the most babies were born in 2025 (29). Over the last ten years it has moved up 2,488 places. More babies were named Sinclair in the 1990s than in any other decade.
Is Sinclair a boy or girl name?
In 2021–2025, 70% girls, 30% boys given the name Sinclair in the US.
Where is Sinclair most popular?
In 2021–2025, Sinclair was most common in Georgia (0.02 per 1,000 girls), followed by Texas and California.