Total births
1,435
Unisex name · since 1900
Sinclair
Since 1900, U.S. Social Security records show 1,435 babies named Sinclair, peaking in 1924. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.
- #6492
- among boys today
- 1,435
- born since 1900
- 1920s
- peak decade
- 55%
- more common than other boys
Sinclair currently ranks #6492 among unisex names in America, with 1,435 babies recorded since 1900.
Sinclair has 1,435 recorded births among boys since 1900, per the U.S. Social Security Administration, ranked #6492 as of the latest data, more common than 55% of boys, busiest in the 1920s -- see the year-by-year trends, decade totals, and state-level distribution below, all drawn directly from SSA birth-registration files spanning 1900 to 2025.
- #6492 among boys today
- 1,435 born since 1900
- 1920s peak decade
- 55% more common than other boys
Data updated Jun 2026
The verdict
Sinclair is currently the #6492 unisex name in America, more common than 55% of boys - 1,435 born since 1900, peaking in the 1920s.
- #6492
- among boys today
- 1,435
- born since 1900
- 1920s
- peak decade
- 55%
- more common than other boys
Sinclair vs. every other boys name in current SSA rankings
#6492
of 14,294 boys in use
More common than 55% of names given to boys today.
1920s
Peak decade
14% of everyone ever named Sinclair was born in this single decade.
1924
Single peak year
29 babies were named Sinclair in 1924 - its busiest year on record.
How Sinclair compares
1,435 Top 25% higher than 75% of 14,294 names currently given to boys
Based on all-time total births among currently-ranked boys names. Names with fewer occurrences are grouped into wider buckets on the right.
Source U.S. Social Security Administration, national baby name data
How the numbers stack up
Sinclair's all-time total is 4x the median boys name, and Liam still leads by a wide margin.
| Metric | Sinclair | Median boys name (Elchonon) | #1 boys name (Liam) |
|---|---|---|---|
| All-time total births | 1,435 | 367 | 358,536 |
| Peak-year births | 29 | 23 | 22,252 |
Sinclair's usage pattern, beyond the headline number
Divide Sinclair's SSA record in two at 1964 and the more recent half accounts for 43% of all births, the earlier half the remaining 57%, a genuinely balanced usage pattern. Its calmest year was 1902, with only 5 births recorded -- set against the 1924 peak of 29, that's the full swing in one name's fortunes.
Sinclair at a glance
Outside the top 1,000Peak year
1924
Current rank
#6,492
Active since
1900
Sinclair popularity over time - boys
Annual U.S. births registered with the Social Security Administration · 1900–2025
- Peak year (1924)
- 29
- Annual births at peak, across 126 years of records
Sinclair popularity over time - girls
477 total births recorded since 1989 (Sinclair as girls' name)
Sinclair by decade
Total births in each ten-year window, peak vs trough at a glance
1920s was Sinclair's strongest decade.
198 babies received the name during that ten-year window, about 14% of all-time use.
Sinclair births by decade
Total births in each ten-year window
- 1900s 13
1900s
13 births
- 1910s
1910s
124 births
- 1920s
1920s
198 births
- 1930s
1930s
156 births
- 1940s
1940s
120 births
- 1950s
1950s
168 births
- 1960s
1960s
105 births
- 1970s
1970s
111 births
- 1980s
1980s
164 births
- 1990s
1990s
105 births
- 2000s 41
2000s
41 births
- 2010s 74
2010s
74 births
- 2020s 56
2020s
56 births
What this shows Peak: 1920s at 198 births (14% of all-time use).
How Sinclair compares to similarly-sized names
Years in SSA records vs. share of all-time use concentrated in the single peak year, among 15 boys names closest to Sinclair's total volume
Sinclair vs 15 similarly-sized boys names
Sinclair by state
Where Sinclair concentrates geographically, total births since 1900
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | South Carolina | | 89 | 6.2% |
| #2 | New York | | 22 | 1.5% |
| #3 | Florida | | 6 | 0.4% |
| #4 | Georgia | | 5 | 0.3% |
| #5 | North Carolina | | 5 | 0.3% |
South Carolina share of Sinclair's total US births 6.2%
Even split
89 of 1,435 births nationwide. Compared to a flat distribution across 5 reporting states.
Frequently Asked Questions
How popular is the name Sinclair? ▼
Sinclair has been given to 1,435 babies in the U.S. since 1900, according to SSA data. Among boys, it ranks #6492 as of the latest data. 29 babies were born in 1924, its single highest year.
When was Sinclair most popular? ▼
Sinclair was most popular in the 1920s decade with 198 total births. The single peak year was 1924.
Where is Sinclair most popular? ▼
The top states for the name Sinclair are South Carolina (89 births), New York (22 births), Florida (6 births).
Is Sinclair a unisex name? ▼
Yes, Sinclair is used for both boys and girls. As a boy's name it has 1,435 births, and as a girl's name it has 477 births.
How long has the name Sinclair been used? ▼
Sinclair has been recorded in Social Security data since 1900, spanning 126 years of data through 2025.
What names are similar to Sinclair? ▼
Names with a similar sound or spelling include Sincere, Sina, Sinan, Sinjin, and 4 more. These share a common prefix and are also used for boys.
What to do with Sinclair's data
- Sinclair's decade-level peak was the 1920s (198 total births); usage has since declined to 56 in the 2020s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- South Carolina records the most Sinclairs (89 births) -- see the full state breakdown if geography matters to your decision. South Carolina names
- Weighing it against an alternative? Put two names side by side. Compare names
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Sinclair
Nearby Names Like Sinclair
Names with a similar sound, spelling, or feel to Sinclair
Sincere Boy
#603 10,095 births
Sina Boy
#6971 520 births
Sinan Boy
#6010 447 births
Sinjin Boy
376 births
Sinai Boy
#6331 249 births
Compare Sinclair side by side: Sinclair vs Sincere Sinclair vs Sina Sinclair vs Sinan
Related Names
Names with a similar popularity rank to Sinclair
Everitt #6491
592 births · Peak 2022
Charlotte #6493
771 births · Peak 1942
Graydon #6490
3,509 births · Peak 2010
Hercules #6494
1,320 births · Peak 2023
Oneal #6489
3,049 births · Peak 1932
Fidencio #6495
2,232 births · Peak 1928
Whitney #6488
5,994 births · Peak 1986
Elson #6496
1,333 births · Peak 1924
Data Sources
Data as of June 2026. Source: U.S. Social Security Administration (SSA).
According to the Social Security Administration, this profile draws directly from the agency's public-use baby-name files (updated June 2026). See our methodology for the full extraction, aggregation, and privacy-suppression rules.
Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data, 1900–2025 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Sinclair: #6492 Unisex Name - 1,435 Births, Peak 1924." NameAlmanac. Accessed via https://namealmanac.com/name/sinclair. Licensed CC BY-SA 4.0.
Name Almanac is rendered directly from the Social Security Administration's public baby-name files, no number is typed in by an editor. This profile for Sinclair draws directly on SSA national and state-level files, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.