Tamsen

Girls' name

Variant of Tamsin

Tamsen has been given to 419 babies in the U.S. since 1943. It was used fewer than 5 times in 2025, so it doesn't appear in the latest year's list — today it's a genuinely uncommon pick. Its peak year was 1979, with 23 recorded.

Babies named Tamsen, 2024

1 in 669,000

Tamsen over time, 1880–2025

Girls

Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Tamsen: meaning, origin, and history

Variant of Tamsin

Deeper origin not confirmed in the cited records

What Tamsen means

Tamsen is a variant of Tamsin.

Documented naming usage and pronunciation

Tamsen is used in English (Rare).

Another recorded pronunciation is /ˈtæm.zən/ for Tamsen.

Meaning behind the documented name family

The name developed through Tamsen → Tamsin → Thomasina → Thomas. The family’s meaning is “twin”, recorded in English with the source elements תאמא.

Related names and everyday forms

Related names include Tamsin.

American usage and historical context

In the United States, 419 girls were recorded with the name Tamsen between 1943 and 2024. Its highest annual count was 23 in 1979; its best national rank was #3,065 in 1958.

Sources & methodologyReferences, data & attribution

Meaning, origin, and language notes draw on the references below.

American popularity figures use published Social Security Administration records for this exact spelling. Counts below five for a name, sex, and year are omitted.

Wiktionary material is available under CC BY-SA 4.0.

How common is Tamsen?

Tamsen had fewer than 5 recorded uses in 2025, so these figures use 2024, the last year it was published.

Among all babies, 2024: 1 in 669,000; 5 of 3,342,801 births
Among girls only: 1 in 324,000; <0.01% of girls
Rank, 2024: Unranked; Fewer than 5 uses
Coin-flip room size: 463,412 kids; Even odds of a second one

Where Tamsen sits on the popularity scale

Rarest published (5 a year)#1 — Olivia (13,544)

Chance at least one other child shares the name

If the other children were drawn at random from the 2024 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.

Class of 20Under 1%

Class of 30Under 1%

Grade of 100Under 1%

School of 500Under 1%

Put another way: gather 463,412 children born in 2024 and it's an even bet that one of them is another Tamsen. In a class of 30 the chance is Under 1%.

When Tamsens were born

Half of everyone ever recorded as Tamsen was born before 1972 — so the typical Tamsen is around 53 today.

Median birth year: 1972; About 53 years old
Biggest decade: 1980s; 27.0% of all use
Born in the last 25 years: 6.0%; Mostly a past generation
Recorded since 1950: 400; People you could plausibly meet

Choose a decade

1980s — 27.0% of all recorded uses (113).

Is Tamsen rising or falling?

Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.

Rank vs 1 year ago: —; Not ranked then
Rank vs 5 years ago: New entry; Not ranked then
Rank vs 10 years ago: —; Not ranked then
Births vs 10 years ago: —; Not published both years
Share of its own peak: 0%; Peak was 1979 (23)
Years since peak: 46; Years
Year-to-year steadiness: Volatile; 25.7% average annual change
Best rank ever: #3,065; 1958

Spellings of Tamsen

Tamsen is not the most common spelling — Camden is, with 19.1% against Tamsen's 2.0%.

Camden19.1%3,923
Tamie15.7%3,237
Ramsey11.0%2,259
Karsen8.5%1,755
Taylen6.0%1,234
Taren5.7%1,177
Carsen5.5%1,131
Taleen5.5%1,130

Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.

Where Tamsen is used

Across 1910–2025, Tamsen was most concentrated in California — about 1 in — girls, against 1 in 2,829,369 across all states with data. It was least common in Texas (1 in —).

00 per 100,000

State popularity map

Most concentrated

1California1 in —
2Texas1 in —

Shading is the share of that state's recorded girls given this name, not the raw count — otherwise the map would just show which states are biggest. Unshaded states have no published records for this period. U.S. birth records suppress state-year counts below 5; state counts therefore don't add up to the national total. Every state links to its full rankings. Tamsen has too little recent state data to map, so this covers all years from 1910.

Tamsen by the numbers

The raw record for each sex the name is used for.

As a girl's name

Rank in 2025: Unranked
Trend vs 5 yrs ago: —
Best rank ever: #3,065; 1958
Peak year: 1979; 23 that year
First recorded: 1943
Last recorded: 2024
All-time count: 419
Count in 2025: Under 5

Names similar to Tamsen

Matched on shared beginnings and endings, similar length, and comparable popularity.

Tamari Tamani Tamsin Kaysen Tamryn Tamyah Tamaria Tamiya Chosen Tamyia Tamila Tammra Tamzin Tameko Tamyra Tammye Tamora Tameca Tamina Tammey Maysen Tamiyah Tamiah Tamber

Sibling names for Tamsen

Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.

For a sister

Bambi Shanika Mellissa Latosha Adria Lani Malissa Lindy

For a brother

Delvin Leopoldo Jerod Cedrick Reggie Jed Wilfredo Kristofer

Explore around Tamsen

Top names of 1979, Tamsen's peak year The 1970s in full Other names that peaked in 1958 Girls' names starting with T