Thomasine
Recorded 1909–1994 · United States
Thomasine was most popular in 1950, when 67 American babies were given the name — ranking #1,895 that year. It was not recorded in 2025. Across 1880–2025 the Social Security Administration has recorded 2,234 people named Thomasine.
Thomasine over time
How old is the name Thomasine?
Thomasine first appears in Social Security Administration records in 1909, which makes it about 116 years old as a recorded American name. It has been recorded in 79 of the 117 years since. It was last recorded in 1994.
How many people are named Thomasine?
The Social Security Administration has recorded 2,234 American births named Thomasine between 1880 and 2025. That is recorded US births, not a world population — it counts people issued a Social Security number at birth in the United States. Of those, roughly 1,290 are estimated to be alive today.
How many babies were named Thomasine in 2025?
Thomasine was not recorded in 2025. The SSA withholds any name given to fewer than five babies in a year, so fewer than five American babies were given it.
Is Thomasine a boy’s or a girl’s name?
Across the whole record Thomasine is a girl’s name — 100.0% of the 2,234 Americans given it were girls and 0.0% were boys.
Counted from every US birth the Social Security Administration recorded under this name, so it reflects use rather than opinion. A name given to fewer than five babies of one sex in a year is withheld at source and is not counted.
How old is someone named Thomasine?
Roughly 1,290 Americans named Thomasine are alive today — 58% of everyone ever recorded with the name. The median is 70 years old, and half are between 61 and 78.
An estimate, not a count. Recorded births are carried forward through the Social Security Administration’s 2023 period life table, by age and sex. That table describes mortality in one recent year, so it credits the oldest cohorts with today’s survival rather than the harsher rates they actually lived through — the further back a name peaked, the more this will overstate how many remain. It counts people issued a Social Security number at birth, not immigrants who arrived later.
Where Thomasine is most concentrated
How much more common the name is in each state than across the country as a whole.
Explore further
See Thomasine on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org