Recorded 1918–2025 · United States
Lennox was most popular in 2022, when 1,915 American babies were given the name — ranking #359 that year. In 2025 it ranked #438, with 1,552 births. Across 1880–2025 the Social Security Administration has recorded 19,739 people named Lennox.
Lennox first appears in Social Security Administration records in 1918, which makes it about 107 years old as a recorded American name. It has been recorded in 72 of the 108 years since.
The Social Security Administration has recorded 19,739 American births named Lennox 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 19,540 are estimated to be alive today.
1,552 American babies were named Lennox in 2025, ranking #438 that year.
Lennox is rising. Across 2021–2025 it averaged 1,773 births a year, against 576 a year across 2011–2015 — a change of +208% 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 Lennox is a unisex name — 27.4% of the 19,739 Americans given it were girls and 72.6% were boys. In births since 2016 it is 29% girls and 71% 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 19,540 Americans named Lennox are alive today — 99% of everyone ever recorded with the name. The median is 6 years old, and half are between 3 and 10. That is a narrow band because Lennox 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 Lennox on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org