Recorded 2009–2025 · United States
Castiel was most popular in 2019, when 337 American babies were given the name — ranking #1,519 that year. In 2025 it ranked #2,052, with 224 births. Across 1880–2025 the Social Security Administration has recorded 3,924 people named Castiel.
Castiel first appears in Social Security Administration records in 2009, which makes it about 16 years old as a recorded American name. It has been recorded in 17 of the 17 years since.
The Social Security Administration has recorded 3,924 American births named Castiel 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 3,894 are estimated to be alive today.
224 American babies were named Castiel in 2025, ranking #2,052 that year.
Castiel is rising. Across 2021–2025 it averaged 276 births a year, against 193 a year across 2011–2015 — a change of +43% 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 Castiel is a boy’s name — 0.8% of the 3,924 Americans given it were girls and 99.2% were boys. In births since 2016 it is 1% girls and 99% 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 3,894 Americans named Castiel are alive today — 99% of everyone ever recorded with the name. The median is 7 years old, and half are between 4 and 11. That is a narrow band because Castiel is a young name — it only became common recently, so almost everyone carrying it is still a child or a young adult.
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 Castiel on the interactive charts
About · Privacy · Contact
Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org