Given name & surname
Castro
Castro is a surname from Spanish. It is used in English, Spanish, Portuguese, Galician, and 1 other language.
Meaning & origin
Where it comes from
Castro is a variant of Castor. An origin associated with Castor is Greek.
Explained through its name family
The story
Published U.S. birth records include this spelling as early as 1978. This is the earliest published observation available here, rather than a date for the name’s origin.
From dated birth records
Castro through the years
- Babies since 1880
- 6
- 6 boys · 0 girls
- Most popular year
- 1978
- 6 babies
- 2025
- 0
- Outside the ranked list
- 2021–25 vs 2016–20
- —
- Too few births to compare
By the numbers
The most recent published U.S. birth count for boys is 6 in 1978. Later missing counts do not mean the name went unused. Published U.S. population figures for this spelling include 399 as a first name in 2020; 187,649 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.
Castro’s family of names
Castro has a related form in Castor. In Portuguese usage, Castro as a surname has a related form in CRASTO. In English usage, Castro as a surname has a conventional equivalent in the Greek form Κάστρο.
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.
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