Meaning & origin
A reliable meaning for Castle isn’t established in our sources yet. Rather than guess, we show what is recorded: how the name is used, how often, and the names it’s connected to.
The story
Published U.S. birth records include this spelling as early as 1916. This is the earliest published observation available here, rather than a date for the name’s origin.
From dated birth records
Castle through the years
- Babies since 1880
- 385
- 385 boys · 0 girls
- Most popular year
- 2018
- 32 babies
- 2025
- 17
- #5,430 for boys
- 2021–25 vs 2016–20
- −15%
- Easing
By the numbers
In 2025, this name appeared in 17 U.S. birth records for boys, ranking No. 5,430 among boys’ names. Average annual use for boys was 14.8% lower in 2021–2025 than in 2016–2020. Its largest published annual count for boys was 32 in 2018. Published U.S. population figures for this spelling include 411 as a first name in 2020; 19,501 as a surname in 2020.
From Social Security birth records and U.S. Census name counts for this exact spelling. Other spellings are counted separately.
Castle’s family of names
In English usage, Castle as a surname has a related form in CASSELL. In English usage, Castle as a surname has a related form in Castel.
Inner ring: nicknames and forms · outer: across languages.
Nicknames & forms 2
Diminutives, pet forms, short forms and variants used alongside the name.
Across languages 1
Equivalents and cognates in other languages, plus older forms it grew from.
Similar names
If you love Castle, these share its style, era, origin or sound, from outside its own family.
Karson
“from the swamp” · “a free man”
95% boys · 5% girls
Kashton
Kashton is a masculine given name.
99% boys · 1% girls
Karter
“a transporter of merchandise” · “one who transports goods; one who drives a cart”
86% boys · 14% girls
Carson
“from the swamp” · “the son of a marsh dweller”
96% boys · 4% girls
Kyrie
“a lord” · “having dark features”
93% boys · 7% girls
Kade
“from the wetlands”
99% boys · 1% girls
Kash
Kash is a masculine given name.
98% boys · 2% girls
Kyler
“an archer”
94% boys · 6% girls