Sinclair Boy & girl
How popular is Sinclair?
#4,660 girl name in 2025
29 baby girls were named Sinclair in the US in 2025, making it the 4660th most popular girl name. Another 14 boys got the name (#6,140 for boys).
Sinclair popularity over time
Boys Girls
| Rank in 2025 | #4,660 for girls (▲ 110 from 2024) |
|---|---|
| Babies in 2025 | 29 girls, 14 boys |
| 10-year trend | Rising fast (+71% babies vs 2015) |
| Earlier ranks | #6,974 in 2015, #10,245 in 2020 |
| Peak year | 2025 (29 girls) |
| Highest rank | #4,516 in 1994 |
| First recorded | 1989 |
| Boys vs girls (last 10 years) | 35% boys, 65% girls |
| Chance a classmate shares it | 0.0% in a class of 25 kids born in 2025 |
Sinclair counting every spelling
Social Security counts each spelling as its own name. Adding together the spellings that sound alike, the Sinclair family of names ranked #2,600 for girls in 2025 (#2,813 the year before), with 42 babies in all.
| Spelling | Girls in 2025 | Share |
|---|---|---|
| Sinclair | 29 | 69% |
| Sinclaire | 8 | 19% |
| Synclaire | 5 | 12% |
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 Sinclair is most popular
Babies named Sinclair per 1,000 girls born in each state, 2021 to 2025. Darker means more common.
- Georgia: 0.0 per 1,000 (5 girls)
- Texas: 0.0 per 1,000 (6 girls)
- California: 0.0 per 1,000 (5 girls)
Sinclair by decade
Girl names about as popular as Sinclair
Questions
- Is Sinclair a boy or girl name?
- Sinclair is used for both. Over the last 10 years, 35% of babies named Sinclair were boys and 65% were girls.
- How popular is the name Sinclair?
- 29 baby girls were named Sinclair in the US in 2025, making it the 4660th most popular girl name. Another 14 boys got the name (#6,140 for boys).
- When was Sinclair most popular?
- Sinclair peaked in 2025, when 29 girls were given the name. Its highest rank was #4,516 in 1994.
- How many people are named Sinclair?
- 1,912 babies have been named Sinclair in the US since 1880. We estimate about 1,290 of them are alive in 2026, with a median age of 32.
- Where is Sinclair most popular?
- From 2021 to 2025, Sinclair was most common in Georgia, at 0.0 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.