September
Recorded 1955–2025 · United States
September was most popular in 1980, when 51 American babies were given the name — ranking #3,212 that year. In 2025 it ranked #10,279, with 20 births. Across 1880–2025 the Social Security Administration has recorded 2,203 people named September.
September over time
How old is the name September?
September first appears in Social Security Administration records in 1955, which makes it about 70 years old as a recorded American name. It has been recorded in 71 of the 71 years since.
How many people are named September?
The Social Security Administration has recorded 2,203 American births named September 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 2,121 are estimated to be alive today.
How many babies were named September in 2025?
20 American babies were named September in 2025, ranking #10,279 that year.
Is September getting more or less popular?
September is holding steady. Across 2021–2025 it averaged 22 births a year, against 29 a year across 2011–2015 — a change of -24% 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 September a boy’s or a girl’s name?
Across the whole record September is a girl’s name — 100.0% of the 2,203 Americans given it were girls and 0.0% were boys. In births since 2016 it is 100% girls and 0% 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 September?
Roughly 2,121 Americans named September are alive today — 96% of everyone ever recorded with the name. The median is 35 years old, and half are between 19 and 49. That is a wide band, the mark of a name in steady use across generations rather than a passing fashion.
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 September is most concentrated
How much more common the name is in each state than across the country as a whole.
Explore further
See September on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org