Karilyn
Recorded 1934–2021 · United States
Karilyn was most popular in 1978, when 32 American babies were given the name — ranking #4,130 that year. It was not recorded in 2025. Across 1880–2025 the Social Security Administration has recorded 897 people named Karilyn.
Karilyn over time
How old is the name Karilyn?
Karilyn first appears in Social Security Administration records in 1934, which makes it about 91 years old as a recorded American name. It has been recorded in 79 of the 92 years since.
How many people are named Karilyn?
The Social Security Administration has recorded 897 American births named Karilyn 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 802 are estimated to be alive today.
How many babies were named Karilyn in 2025?
Karilyn was not recorded in 2025. The SSA withholds any name given to fewer than five babies in a year, so fewer than five American babies were given it.
Is Karilyn getting more or less popular?
Karilyn is too rare for a direction to mean much. It averaged 5 births a year across 2021–2025 against 7 a year a decade earlier — at these counts a single baby moves the percentage, and any year under five births is withheld at source.
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 Karilyn a boy’s or a girl’s name?
Across the whole record Karilyn is a girl’s name — 100.0% of the 897 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.
How old is someone named Karilyn?
Roughly 802 Americans named Karilyn are alive today — 89% of everyone ever recorded with the name. The median is 44 years old, and half are between 31 and 61. That is a wide band, the mark of a name in steady use across generations rather than a passing fashion.
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