Recorded 1918–2025 · United States
Kieran was most popular in 2025, when 828 American babies were given the name — ranking #768 that year. In 2025 it ranked #768, with 828 births. Across 1880–2025 the Social Security Administration has recorded 19,218 people named Kieran.
Kieran 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 99 of the 108 years since.
The Social Security Administration has recorded 19,218 American births named Kieran 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 18,657 are estimated to be alive today.
828 American babies were named Kieran in 2025, ranking #768 that year.
Kieran is rising. Across 2021–2025 it averaged 694 births a year, against 546 a year across 2011–2015 — a change of +27% 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 Kieran is mostly a boy’s name — 8.3% of the 19,218 Americans given it were girls and 91.7% were boys. In births since 2016 it is 3% girls and 97% 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 18,657 Americans named Kieran are alive today — 97% of everyone ever recorded with the name. The median is 16 years old, and half are between 8 and 25.
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 Kieran on the interactive charts
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Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org