Recorded 1913–2025 · United States
Lennon was most popular in 2022, when 1,730 American babies were given the name — ranking #402 that year. In 2025 it ranked #397, with 1,729 births. Across 1880–2025 the Social Security Administration has recorded 20,579 people named Lennon.
Lennon first appears in Social Security Administration records in 1913, which makes it about 112 years old as a recorded American name. It has been recorded in 105 of the 113 years since.
The Social Security Administration has recorded 20,579 American births named Lennon 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 20,136 are estimated to be alive today.
1,729 American babies were named Lennon in 2025, ranking #397 that year.
Lennon is rising. Across 2021–2025 it averaged 1,676 births a year, against 640 a year across 2011–2015 — a change of +162% 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 Lennon is a unisex name — 61.1% of the 20,579 Americans given it were girls and 38.9% were boys. It changed hands: since 2014 it has gone mainly to girls, having gone mainly to boys before that. In births since 2016 it is 74% girls and 26% 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 20,136 Americans named Lennon are alive today — 98% of everyone ever recorded with the name. The median is 7 years old, and half are between 4 and 11. That is a narrow band because Lennon is a young name — it only became common recently, so almost everyone carrying it is still a child or a young adult.
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 Lennon on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org