Thomasin is a girl name with a rare feel, drawn from real birth records. Below you'll find how many babies have been named Thomasin across the United States, UK, Ireland and New Zealand, how popular Thomasin has been over the decades, and the year it peaked.
| Country | Births on record |
|---|---|
| United States since 1880 | 72 births |
| England & Wales since 1996 | 18 births |
Counts come from official national birth-registration statistics: U.S. Social Security Administration, England & Wales (Office for National Statistics), Scotland (National Records of Scotland), Northern Ireland (NISRA), Ireland (Central Statistics Office) and New Zealand (Dept. of Internal Affairs). Coverage spans differ, so totals aren't directly comparable across countries.
Babies named Thomasin per year, United States (1963 to 2025). United States peaked in 2023 (16/yr) · England & Wales peaked in 2022 (5/yr).
Thomasin is a rare baby name in the United States. It was most common in 2023, when it ranked #12,153 nationally (given to 19 babies that year).
Thomasina · Thomasine · Thomasena · Thomasene · Thomasenia · Tomasina · Tamsin · Tamasine
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