Baby Names US
Unisex name ★ peaked 2025

Sinclair

Gender Unisex · 25% girls Rank 2025 #6,400 Trend ↑ Rising 46%

Derived from Saint Clare, to whom the clan's churches were dedicated.

Rank 2025
#6,400
among boys · ↑376 vs 2024
Babies in 2025
43
named Sinclair · +5% vs 2024
How common
1 in 122,005
boys born in 2025
Peak year
2025
43 babies
All-time total
1,912
#4,083 all-time among boys
First recorded
1900
in Social Security records

Sinclair popularity over time

1,912 babies have been named Sinclair since 1900, according to official Social Security records. Switch measure to see births per year or the yearly rank.

Measure
Births per 1,000 babies of that sex, comparable across eras
0.020.040.060.0818801900192019401960198020002020GirlsBoys
BoysGirls

By decade. Change compares yearly averages, so the current partial decade is on equal footing. Best rank is the name's best yearly rank within the decade.

Decade Girls Boys Total Per year Change Best rank
1880s – – – – – –
1890s – – – – – –
1900s – 13 13 1 – #1,040
1910s – 124 124 12 +854% #1,405
1920s – 198 198 20 +60% #1,409
1930s – 156 156 16 -21% #1,485
1940s – 120 120 12 -23% #1,686
1950s – 168 168 17 +40% #1,550
1960s – 105 105 11 -37% #2,021
1970s – 111 111 11 +6% #2,761
1980s 5 164 169 17 +52% #2,500
1990s 116 105 221 22 +31% #3,752
2000s 117 41 158 16 -29% #8,332
2010s 120 74 194 19 +23% #7,081
2020s (to 2025) 119 56 175 29 +50% #6,400

The story of Sinclair

Sinclair is rare for boys in the United States, ranked #6,400 in 2025 with 14 babies given the name. It is currently rising compared with a decade ago.

Since 1900, 1,912 American babies have been named Sinclair, about 75% boys and 25% girls, making it a genuinely unisex name. Its peak came in 2025, when 43 newborns received the name, the signature sound of the 2020s.

The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Sinclair stood among all boys' names in any year, or use the compare tool to plot it against other names.

How old are people named Sinclair?

The median living Sinclair is about 31 years old; half are between 13 and 53. An estimated 1,300 people named Sinclair are alive in the United States today.

median 31 020406080100

Estimated from births per year and Social Security period life tables; an approximation of the living age distribution, by age in years.

Sinclair year by year

Every year since 2001, and five-year steps back to 1880. Rank is within each sex.

Year Girls Girls rank Boys Boys rank
2025 29 #4,740 14 #6,400
2024 28 #4,876 13 #6,776
2023 22 #5,722 5 #13,890
2022 13 #8,467 7 #10,686
2021 18 #6,651 8 #9,571
2020 9 #10,974 9 #8,624
2019 12 #9,042 7 #10,638
2018 17 #7,069 7 #10,583
2017 16 #7,394 10 #8,056
2016 9 #11,663 12 #7,081
2015 17 #7,228 10 #7,954
2014 8 #12,919 – –
2013 10 #10,900 9 #8,664
2012 12 #9,639 – –
2011 14 #8,566 8 #9,474
2010 5 #19,457 11 #7,500
2009 8 #13,522 7 #10,806
2008 11 #10,699 9 #8,901
2007 8 #13,764 – –
2006 15 #8,185 – –
2005 12 #9,370 5 #13,070
2004 9 #11,488 7 #9,792
2003 11 #9,605 – –
2002 13 #8,223 8 #8,332
2001 15 #7,269 – –
2000 15 #7,119 5 #11,879
1995 15 #6,227 10 #5,853
1990 6 #12,736 16 #3,752
1985 – – 11 #4,015
1980 – – 12 #3,585
1975 – – 10 #3,627
1970 – – 11 #3,042
1965 – – 7 #3,503
1960 – – 12 #2,522
1955 – – 18 #1,898
1950 – – 15 #2,012
1945 – – 12 #2,116
1940 – – 6 #3,420
1935 – – 13 #2,114
1930 – – 14 #2,161
1925 – – 12 #2,570
1920 – – 19 #1,878
1915 – – 17 #1,772
1910 – – 7 #1,405
1905 – – – –
1900 – – 8 #1,040
1895 – – – –
1890 – – – –
1885 – – – –
1880 – – – –

Famous people named Sinclair

The most globally famous bearers of the name, ranked by fame across Wikipedia editions (Pantheon project, MIT).

  1. 1 Sinclair Lewis Sinclair Lewis American writer (1885–1951) 19th century

Portraits from Wikipedia (Wikimedia Commons).

Frequently asked questions

Quick answers about Sinclair, drawn from the same Social Security data as the charts above.

How old is the average Sinclair?

The median living Sinclair is about 31 years old. Half of all living Sinclairs are between 13 and 53 years old.

How many people named Sinclair are alive today?

An estimated 1,300 people named Sinclair are alive in the United States, based on 1,912 recorded births and Social Security life tables.

What does the name Sinclair mean?

Derived from Saint Clare, to whom the clan's churches were dedicated.

How popular is the name Sinclair in 2025?

Sinclair ranked #6,400 among boys' names in the United States in 2025, with 14 babies given the name, according to Social Security Administration data.

How many people are named Sinclair?

1,912 babies have been named Sinclair in the United States since 1900, based on Social Security card applications.

When was the name Sinclair most popular?

Sinclair peaked in 2025, when 43 newborns received the name.

Is Sinclair a boy or girl name?

Sinclair is used for both: about 25% of babies named Sinclair have been girls and 75% boys.

Is the name Sinclair rising or falling?

Sinclair is on the rise, noticeably more popular now than a decade ago.

Who are famous people named Sinclair?

Well-known people named Sinclair include Sinclair Lewis (writer).

Names like Sinclair

Names that sound and feel close to Sinclair: shared sounds, similar era, similar popularity. Each links to its full history.

Compare Sinclair with similar names → More names starting with S →