Recorded 1943–2025 · United States
Kaylee was most popular in 2009, when 7,225 American babies were given the name — ranking #95 that year. In 2025 it ranked #544, with 1,205 births. Across 1880–2025 the Social Security Administration has recorded 140,601 people named Kaylee.
Kaylee first appears in Social Security Administration records in 1943, which makes it about 82 years old as a recorded American name. It has been recorded in 66 of the 83 years since.
The Social Security Administration has recorded 140,601 American births named Kaylee 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 139,192 are estimated to be alive today.
1,205 American babies were named Kaylee in 2025, ranking #544 that year.
Kaylee is falling. Across 2021–2025 it averaged 1,610 births a year, against 5,154 a year across 2011–2015 — a change of -69% 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 Kaylee is a girl’s name — 99.9% of the 140,601 Americans given it were girls and 0.1% 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 139,192 Americans named Kaylee are alive today — 99% of everyone ever recorded with the name. The median is 19 years old, and half are between 13 and 25. That is a narrow band: Kaylee arrived and faded within about a decade rather than staying in steady use.
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.
English · a modern blend of Kay and Lee
How much more common the name is in each state than across the country as a whole.
See Kaylee on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org