Tamsin: Name Popularity, History & Rankings (1880

Rank 2025

–

among girls

Babies in 2025

named Tamsin

How common

–

girls born in 2025

Peak year

2017

27 babies

All-time total

413

#13,265 all-time among girls

First recorded

1955

in Social Security records

Tamsin popularity over time

413 babies have been named Tamsin since 1955, 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

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	Per year	Change	Best rank
1880s	–	–	–	–
1890s	–	–	–	–
1900s	–	–	–	–
1910s	–	–	–	–
1920s	–	–	–	–
1930s	–	–	–	–
1940s	–	–	–	–
1950s	13	1	–	#4,789
1960s	22	2	+69%	#6,488
1970s	18	2	-18%	#7,892
1980s	21	2	+17%	#7,241
1990s	26	3	+24%	#10,444
2000s	77	8	+196%	#9,389
2010s	173	17	+125%	#5,035
2020s (to 2025)	63	11	-39%	#6,059

The story of Tamsin

Tamsin is not currently in use for newborns in the United States: fewer than five babies received the name in 2025. Its story lives in the historical record below.

Since 1955, 413 American babies have been named Tamsin. Its peak came in 2017, when 27 newborns received the name, the signature sound of the 2010s.

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 Tamsin stood among all girls' names in any year, or use the compare tool to plot it against other names.

How old are people named Tamsin?

The median living Tamsin is about 12 years old; half are between 8 and 24. An estimated 400 people named Tamsin are alive in the United States today.

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

Tamsin year by year

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

Year	Girls	Girls rank
2025	–	–
2024	7	#13,343
2023	8	#12,077
2022	14	#7,991
2021	14	#7,993
2020	20	#6,059
2019	21	#5,959
2018	17	#7,075
2017	27	#5,035
2016	23	#5,776
2015	22	#6,013
2014	19	#6,679
2013	14	#8,525
2012	13	#9,067
2011	8	#13,234
2010	9	#12,161
2009	9	#12,345
2008	11	#10,730
2007	9	#12,576
2006	8	#13,489
2005	12	#9,389
2004	9	#11,523
2003	7	#13,705
2002	–	–
2001	7	#13,355
2000	5	#17,349
1995	–	–
1990	–	–
1985	–	–
1980	6	#10,241
1975	–	–
1970	6	#7,892
1965	–	–
1960	–	–
1955	5	#6,621
1950	–	–
1945	–	–
1940	–	–
1935	–	–
1930	–	–
1925	–	–
1920	–	–
1915	–	–
1910	–	–
1905	–	–
1900	–	–
1895	–	–
1890	–	–
1885	–	–
1880	–	–

Famous people named Tamsin

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

1 Tamsin Egerton British actress (born 1988) b. 1990 · Contemporary
2 Tamsin Greig British actress (born 1966) Contemporary

Portraits from Wikipedia (Wikimedia Commons).

Frequently asked questions

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

How old is the average Tamsin?

The median living Tamsin is about 12 years old. Half of all living Tamsins are between 8 and 24 years old.

How many people named Tamsin are alive today?

An estimated 400 people named Tamsin are alive in the United States, based on 413 recorded births and Social Security life tables.

What does the name Tamsin mean?

A medieval contraction of Thomasina, a feminine form of Thomas, revived in the UK in the twentieth century.

How popular is the name Tamsin in 2025?

Tamsin did not appear in the 2025 Social Security data, which means fewer than five babies received the name that year.

How many people are named Tamsin?

413 babies have been named Tamsin in the United States since 1955, based on Social Security card applications.

When was the name Tamsin most popular?

Tamsin peaked in 2017, when 27 newborns received the name.

Is Tamsin a boy or girl name?

Tamsin is overwhelmingly a girl's name: 100% of babies with the name.

Is the name Tamsin rising or falling?

Tamsin is declining, less popular now than a decade ago.

Who are famous people named Tamsin?

Well-known people named Tamsin include Tamsin Egerton (actor), Tamsin Greig (actor).

Names like Tamsin

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

Compare Tamsin with similar names → More names starting with T →