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.
- #30,874 of 72,339
- all-time among girls
- #8,465 of 17,297
- 2025 SSA year
- 72
- born since 1963
- 2020s
- peak decade
Yes -- Thomasin is the #8465 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 #8465 nationally and more common than 51% 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.
- #30,874 of 72,339 all-time among girls
- #8,465 of 17,297 2025 SSA year
- 72 born since 1963
- 2020s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Thomasin ranks #30,874 of 72,339 girls' names by all-time recorded births (highest first) and #8,465 of 17,297 among girls' names in 2025. 72 born since 1963, peaking in the 2020s.
- #30,874 of 72,339
- all-time among girls
- #8,465 of 17,297
- 2025 SSA year
- 72
- born since 1963
- 2020s
- peak decade
Thomasin's 72 recorded births place it above 57.3% of the 72,339 girls names in the full SSA archive.
No state rows cleared SSA’s public reporting threshold for this name.
How Thomasin compares
72 20th percentile among 17,297 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 (Kyann) | #1 girls name (Olivia) |
|---|---|---|---|
| All-time total births | 72 | 376 | 567,345 |
| Peak-year births | 16 | 21 | 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 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
2020s is the heaviest window (62 births, 86% of the file).
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
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Keep exploring Thomasin
Nearby Names Like Thomasin
Names with a similar sound, spelling, or feel to Thomasin
Compare Thomasin side by side: Thomasin vs Thomas Thomasin vs Thomasina Thomasin vs Thora
Related Names
Names with a similar popularity rank to Thomasin
Nationwide names with similar peak year or record span
Two nationwide peer axes for Thomasin: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~2023)
Similar record span (~62 yrs)
Peak year is the single SSA year with the most births for that name; record span is first-to-latest year in the national files, not a recommendation or shared origin claim.
Data Sources
Data as of August 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).
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 August 2026.