Lennyn
Recorded 2001–2025 · United States
Lennyn was most popular in 2025, when 142 American babies were given the name — ranking #2,794 that year. In 2025 it ranked #2,794, with 142 births. Across 1880–2025 the Social Security Administration has recorded 930 people named Lennyn.
Lennyn over time
How old is the name Lennyn?
Lennyn first appears in Social Security Administration records in 2001, which makes it about 24 years old as a recorded American name. It has been recorded in 21 of the 25 years since.
How many people are named Lennyn?
The Social Security Administration has recorded 930 American births named Lennyn 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 924 are estimated to be alive today.
How many babies were named Lennyn in 2025?
142 American babies were named Lennyn in 2025, ranking #2,794 that year.
Is Lennyn getting more or less popular?
Lennyn is rising. Across 2021–2025 it averaged 108 births a year, against 15 a year across 2011–2015 — a change of +608% 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 Lennyn a boy’s or a girl’s name?
Across the whole record Lennyn is mostly a girl’s name — 87.0% of the 930 Americans given it were girls and 13.0% were boys. In births since 2016 it is 93% girls and 7% 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 Lennyn?
Roughly 924 Americans named Lennyn are alive today — 99% of everyone ever recorded with the name. The median is 5 years old, and half are between 2 and 9. That is a narrow band because Lennyn 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.
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org