Seneca
Recorded 1956–2025 · United States
Seneca was most popular in 1977, when 219 American babies were given the name — ranking #1,254 that year. In 2025 it ranked #5,675, with 49 births. Across 1880–2025 the Social Security Administration has recorded 3,523 people named Seneca.
Seneca over time
How old is the name Seneca?
Seneca first appears in Social Security Administration records in 1956, which makes it about 69 years old as a recorded American name. It has been recorded in 61 of the 70 years since.
How many people are named Seneca?
The Social Security Administration has recorded 3,523 American births named Seneca 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 3,396 are estimated to be alive today.
How many babies were named Seneca in 2025?
49 American babies were named Seneca in 2025, ranking #5,675 that year.
Is Seneca getting more or less popular?
Seneca is holding steady. Across 2021–2025 it averaged 47 births a year, against 47 a year across 2011–2015 — a change of -1% 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.
Is Seneca a boy’s or a girl’s name?
Across the whole record Seneca is a unisex name — 50.1% of the 3,523 Americans given it were girls and 49.9% were boys. It changed hands: since 2020 it has gone mainly to girls, having gone mainly to boys before that. In births since 2016 it is 59% girls and 41% 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 Seneca?
Roughly 3,396 Americans named Seneca are alive today — 96% of everyone ever recorded with the name. The median is 31 years old, and half are between 18 and 46.
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 Seneca is most concentrated
How much more common the name is in each state than across the country as a whole.
Explore further
See Seneca on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org