Recorded 1921–2025 · United States
Trinity was most popular in 2004, when 5,729 American babies were given the name — ranking #124 that year. In 2025 it ranked #867, with 734 births. Across 1880–2025 the Social Security Administration has recorded 88,192 people named Trinity.
Trinity first appears in Social Security Administration records in 1921, which makes it about 104 years old as a recorded American name. It has been recorded in 64 of the 105 years since.
The Social Security Administration has recorded 88,192 American births named Trinity 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 87,236 are estimated to be alive today.
734 American babies were named Trinity in 2025, ranking #867 that year.
Trinity is falling. Across 2021–2025 it averaged 928 births a year, against 3,056 a year across 2011–2015 — a change of -70% over the decade.
Measured on recorded births. American births overall have fallen since 2007, so most established names lose births over any recent decade — a name can shed births and still hold its rank. Compare the rank above, which is measured against the other names of the same year.
Across the whole record Trinity is a girl’s name — 96.8% of the 88,192 Americans given it were girls and 3.2% were boys. In births since 2016 it is 99% girls and 1% 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.
Roughly 87,236 Americans named Trinity are alive today — 99% of everyone ever recorded with the name. The median is 19 years old, and half are between 14 and 23. That is a narrow band: Trinity arrived and faded within about a decade rather than staying in steady use.
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.
How much more common the name is in each state than across the country as a whole.
See Trinity on the interactive charts
About · Privacy · Contact
Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org