Recorded 1953–2025 · United States
Kaylin was most popular in 2007, when 894 American babies were given the name — ranking #726 that year. In 2025 it ranked #2,916, with 133 births. Across 1880–2025 the Social Security Administration has recorded 19,934 people named Kaylin.
Kaylin first appears in Social Security Administration records in 1953, which makes it about 72 years old as a recorded American name. It has been recorded in 64 of the 73 years since.
The Social Security Administration has recorded 19,934 American births named Kaylin 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 19,699 are estimated to be alive today.
133 American babies were named Kaylin in 2025, ranking #2,916 that year.
Kaylin is falling. Across 2021–2025 it averaged 178 births a year, against 647 a year across 2011–2015 — a change of -72% 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 Kaylin is a girl’s name — 96.9% of the 19,934 Americans given it were girls and 3.1% were boys. In births since 2016 it is 96% girls and 4% 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 19,699 Americans named Kaylin are alive today — 99% of everyone ever recorded with the name. The median is 21 years old, and half are between 15 and 28.
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 Kaylin on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org