Recorded 1947–2025 · United States
Kaylynn was most popular in 2009, when 590 American babies were given the name — ranking #978 that year. In 2025 it ranked #2,895, with 134 births. Across 1880–2025 the Social Security Administration has recorded 12,257 people named Kaylynn.
Kaylynn first appears in Social Security Administration records in 1947, which makes it about 78 years old as a recorded American name. It has been recorded in 73 of the 79 years since.
The Social Security Administration has recorded 12,257 American births named Kaylynn 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 12,101 are estimated to be alive today.
134 American babies were named Kaylynn in 2025, ranking #2,895 that year.
Kaylynn is falling. Across 2021–2025 it averaged 155 births a year, against 450 a year across 2011–2015 — a change of -66% 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 Kaylynn is a girl’s name — 100.0% of the 12,257 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.
Roughly 12,101 Americans named Kaylynn are alive today — 99% of everyone ever recorded with the name. The median is 19 years old, and half are between 13 and 27.
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 Kaylynn on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org