Total births
72
Girls' name · since 1963
Thomasin
72 babies named Thomasin in U.S. Social Security records since 1963, with the highest year being 2023. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- #12393
- among girls today
- 72
- born since 1963
- 2020s
- peak decade
- 30%
- more common than other girls
Yes -- Thomasin is the #12393 most popular girls' name in the U.S. today, with 72 recorded since 1963.
According to the U.S. Social Security Administration, Thomasin has been recorded 72 times among girls since 1963, currently ranked #12393 nationally and more common than 30% of girls, with its heaviest use in the 2020s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 1963 to 2025.
- #12393 among girls today
- 72 born since 1963
- 2020s peak decade
- 30% more common than other girls
Data updated Jul 2026
The verdict
Thomasin is currently the #12393 girls' name in America, more common than 30% of girls - 72 born since 1963, peaking in the 2020s.
- #12393
- among girls today
- 72
- born since 1963
- 2020s
- peak decade
- 30%
- more common than other girls
Thomasin vs. every other girls name in current SSA rankings
#12393
of 17,726 girls in use
More common than 30% of names given to girls today.
2020s
Peak decade
86% of everyone ever named Thomasin was born in this single decade.
2023
Single peak year
16 babies were named Thomasin in 2023 - its busiest year on record.
How Thomasin compares
72 19th percentile among 17,726 names currently given to girls
Based on all-time total births among currently-ranked girls 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
Thomasin's all-time total is 81% below the median girls name, and Olivia still leads by a wide margin.
| Metric | Thomasin | Median girls name (Emerly) | #1 girls name (Olivia) |
|---|---|---|---|
| All-time total births | 72 | 382 | 567,345 |
| Peak-year births | 16 | 48 | 19,840 |
Thomasin's usage pattern, beyond the headline number
Divide Thomasin's SSA record in two at 2022 and the more recent half accounts for 61% of all births, the earlier half the remaining 39%, consistent with a name still gaining ground rather than fading. Its calmest year was 1963, with only 5 births recorded -- set against the 2023 peak of 16, that's the full swing in one name's fortunes.
Thomasin at a glance
Outside the top 1,000Peak year
2023
Current rank
#12,393
Active since
1963
Thomasin popularity over time
Annual U.S. births registered with the Social Security Administration · 1963–2025
- Peak year (2023)
- 16
- Annual births at peak, across 63 years of records
Thomasin by decade
Total births in each ten-year window, peak vs trough at a glance
2020s was Thomasin's strongest decade.
62 babies received the name during that ten-year window, about 86% of all-time use.
Thomasin births by decade
Total births in each ten-year window
- 1960s 5
1960s
5 births
- 1970s 5
1970s
5 births
- 2020s
2020s
62 births
What this shows Peak: 2020s at 62 births (86% of all-time use).
Frequently Asked Questions
How popular is the name Thomasin? ▼
Thomasin has been given to 72 babies in the U.S. since 1963, according to SSA data. Among girls, it ranks #12393 as of the latest data. 16 babies were born in 2023, its single highest year.
When was Thomasin most popular? ▼
Thomasin was most popular in the 2020s decade with 62 total births. The single peak year was 2023.
How long has the name Thomasin been used? ▼
Records for Thomasin go back to 1963, giving 63 years of history through 2025.
What names are similar to Thomasin? ▼
Names with a similar sound or spelling include Thomas, Thomasina, Thora, Thomasine, and 4 more. These share a common prefix and are also used for girls.
Keep exploring Thomasin
Nearby Names Like Thomasin
Names with a similar sound, spelling, or feel to Thomasin
Thomas Girl
#15301 8,511 births
Thomasina Girl
3,765 births
Thora Girl
#4896 2,424 births
Thomasine Girl
2,234 births
Thomasena Girl
768 births
Compare Thomasin side by side: Thomasin vs Thomas Thomasin vs Thomasina Thomasin vs Thora
Related Names
Names with a similar popularity rank to Thomasin
Data Sources
Data as of July 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, 1963–2025 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Thomasin: #12393 Girls' Name - 72 Births, Peak 2023." NameAlmanac. Accessed via https://namealmanac.com/name/thomasin. 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 Thomasin 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 July 2026.