Castiel
Castiel was the 1009th most popular name for boys in 2025, given to 224 babies. Its best year was 2019, when it ranked 723rd with 337 babies. Over the last ten years it has moved down 188 places. More babies were named Castiel in the 2010s than in any other decade.
Meaning angel name (from TV's Supernatural) · American English, Hebrew
Say it KAS-tee-el /ˈkæstiɛl/
- Rank in 2025
- #1,009 boys, down 122 places since 2020
- Babies in 2025
- 224boys
- Girls and boys
- Almost always a boy’s name2021–2025
- Peak year
- 2019337 babies
- Total since 1880
- 3,924babies recorded
What does the name Castiel mean?
Castiel is best known as the angel character in the US TV series Supernatural, introduced in 2008; SSA first records the name in 2009. The writers seem to have adapted Cassiel, an angel named in Jewish, Christian and Islamic mystical writings, sometimes as the angel of Saturn. The meaning of Cassiel is not established, though like other angel names it ends in -el 'God'. Wiktionary lists Castiel without an etymology.
-אֵל (-el) (Hebrew, “God (as in angel names)”)
How sure is this? Uncertain. The TV origin is clear; the derivation from Cassiel and the meaning of Cassiel are not documented.
Related names: Cassiel, Castel.
See also: American names.
Sources for this meaning
- Wiktionary, entry 'Castiel', Wiktionary (CC BY-SA 4.0; facts restated, no text reused)
- Wiktionary, entry 'Cassiel', Wiktionary (CC BY-SA 4.0; facts restated, no text reused)
- US Social Security Administration, national baby-name data 1880-2025 (our computation), SSA (public domain)
Castiel popularity since 1880
A few girls are given the name too: 33 since 2013.
| Year | Rank (boys) | Babies (boys) |
|---|---|---|
| 2025 | #1,009 | 224 |
| 2020 | #887 | 255 |
| 2010 | #2,590 | 47 |
| 2000 | — | — |
| 1990 | — | — |
| 1980 | — | — |
| 1970 | — | — |
| 1960 | — | — |
| 1950 | — | — |
| 1940 | — | — |
| 1930 | — | — |
| 1920 | — | — |
| 1910 | — | — |
| 1900 | — | — |
| 1890 | — | — |
| 1880 | — | — |
How popular is Castiel, counting every spelling?
Castiel is the most common spelling of a name family that ranked #930 for boys in 2025 once every spelling is counted together, compared with #1,009 for Castiel on its own. Together these spellings went to 238 boys in 2025.
| Spelling | Babies 2025 | Official rank | Babies 2021–2025 |
|---|---|---|---|
| Castiel | 224 | #1,009 | 1,381 |
| Kastiel | 14 | #6,279 | 87 |
Spellings count together when they sound the same in American English and are used for the same sex; nicknames and forms that sound different (such as Theo and Theodore) are kept apart. How we group spellings.
How many kids will share the name Castiel?
224 of the 3,606,400 babies born in the US in 2025 were named Castiel (0.06 per 1,000 births). For a boy named Castiel born in 2025, the chance that another child with the same name is in a class of 20 children the same age is under 1 in 50. If every grade liked the name as much as the 2025 babies do, only about one elementary school in 37 (of 430 pupils) would have a child named Castiel.
Shares of all registered births (NCHS); classes assumed to be children born the same year. How we estimate this.
How old are people named Castiel?
About 3,900 people born in the US named Castiel are alive today, with a median age of 7; half are between 4 and 11. That makes Castiel a young name: most people with it are children.
Babies given the name each year (SSA) times the share of that birth year still alive (SSA life tables). Counts people born in the US only. Method.
Castiel by state
How common Castiel was among boys born in each state in 2021–2025. It is notably more common than nationally in Arizona (2.4×). In 20 states fewer than five boys a year got the name, too few for SSA to publish, so those states show as zero.
Names with a similar history
These names rose and fell in step with Castiel: their share of US boys followed the most similar curve since 1880. If you like Castiel, they share its era and feel.
Middle names for Castiel · Sibling names for Castiel
Questions about the name Castiel
What does Castiel mean?
Castiel is usually explained as “angel name (from TV's Supernatural)”, but this is uncertain. Certainty: uncertain.
How popular is the name Castiel?
Castiel was the 1009th most popular name for boys in 2025, given to 224 babies. Its best year was 2019, when it ranked 723rd with 337 babies. Over the last ten years it has moved down 188 places. More babies were named Castiel in the 2010s than in any other decade.
Is Castiel a boy or girl name?
In 2021–2025, almost always a boy’s name given the name Castiel in the US.
Where is Castiel most popular?
In 2021–2025, Castiel was most common in New Mexico (0.40 per 1,000 boys), followed by Arizona and Nevada.