Noah Boy
NOH-uh
“rest, comfort” · Hebrew
#2
Castiel
BoyAmerican (modern coinage)· “angel from the series Supernatural”
- Meaning
- angel from the series Supernatural (origin disputed)
- Origin
- American (modern coinage)
- Pronunciation
- KAS-tee-el
- Syllables
- 2
- US rank 2025
- #1,009
- US babies 2025
- 224
- Best rank
- #723 (2019)
- Peak year
- 2019
Meaning and origin of Castiel
Castiel is often said to mean “angel from the series Supernatural”; the origin is uncertain, though it is usually linked to American (modern coinage) roots.
Castiel is best known as the name of an angel in the television series Supernatural, where he is a central character. The name's deeper origin is uncertain; it resembles Cassiel, an angel named in some Jewish and Christian angelological writings, but the exact link is not established. As a given name, Castiel has a mystical, dramatic sound, with stress on the first syllable. It suits families drawn to angelic or fantasy-inspired names. Cas and Cass are easy nicknames, and the name pairs well with many surnames.
Popularity over time
Castiel first appears in US Social Security records in 2009. It has ranked in the top 1,000 in 12 different years, starting in 2013. Its best national rank was #723 in 2019, the same year it reached its highest count of 337 babies. In 2025, 224 babies were named Castiel, and it ranked #1,009 nationally. Its use has been fairly steady over the past decade.
Its national rank moved from #2,590 in 2010 and #1,009 in 2025. Of the 3,891 US boys named Castiel since records began, 58% were born in the 2010s, its biggest decade. The 2020s come next, with 1,636 babies.
Other boys' names that peaked around the same time include Mordechai, Henrik, Kace, Joziah, and Jaxx.
Where it is most popular (2025)
In 2025, Castiel ranked highest in New Mexico, Arizona, and Oklahoma.
| State | Rank there | Babies |
|---|---|---|
| New Mexico | #374 | 5 |
| Arizona | #468 | 15 |
| Oklahoma | #634 | 6 |
| California | #733 | 36 |
| Indiana | #787 | 7 |
Gender, sound and spelling
About 99% of US babies named Castiel over the last 20 years were boys, with a small share of girls.
Castiel is usually pronounced KAS-tee-el, with two syllables. It has seven letters, starts with C and ends in “-el”.
Middle names for Castiel
A few middle names that flow with Castiel: each avoids a matching first letter, a rhyme and a vowel clash where the names meet.
Sibling names for Castiel
Similar names
Kalel Boy
KAL-el
“Superman's Kryptonian birth name” · American (modern coinage)
#1,161
Angel Boy
AYN-juhl
“messenger” · Greek
#67
Miguel Boy
mee-GEHL
“who is like God?” · Spanish
#212
Uriel Boy
YOOR-ee-ehl
“God is my light” · Hebrew
#446
Azrael Boy
AZ-ray-ehl
“help of God” · Hebrew
#656
Anjel Boy
AHN-hehl
“variant of Angel, messenger” · Spanish
#8,305
Michael Boy
MY-kuhl
“who is like God?” · Hebrew
#21
Denzel Boy
DEN-zuhl
“from a Cornish place name” · Cornish
#1,166
Nigel Boy
NY-juhl
“from Neil; meaning uncertain” · English
#2,088
Adiel Boy
AY-dee-el
“ornament of God” · Hebrew
#1,141
Ishmael Boy
ISH-may-el
“God will hear” · Hebrew
#1,469
Ansel Boy
AN-suhl
“from Anselm; god and helmet” · German
#1,138
Lists that include Castiel
Frequently asked questions
What does the name Castiel mean?
Castiel is often said to mean “angel from the series Supernatural”; the origin is uncertain, though it is usually linked to American (modern coinage) roots.
What is the origin of the name Castiel?
Castiel has modern American roots. Castiel is best known as the name of an angel in the television series Supernatural, where he is a central character.
Is Castiel a popular name?
Not especially. Castiel ranked #1,009 in the US in 2025, which puts it outside the top 1,000.
Is Castiel a boy or girl name?
Castiel is mainly a boy's name. About 99% of US babies named Castiel over the last 20 years were boys, with a small share of girls.
How do you pronounce Castiel?
Castiel is usually pronounced KAS-tee-el. Stressed syllables are in capital letters.
Popularity figures come from US Social Security card applications (names given to at least five babies in a year, 1880 to 2025). How we source names and meanings