# Castello (surname)

Source: https://namelineage.com/surname/castello/  
Publisher: Name Lineage. Counts from the US Census Bureau; origin and etymology from Wiktionary; bearers from Wikidata. Data updated 2026-11-11.

A surname.

| Field | Value |
|---|---|
| Origin | not recorded |
| Type | not recorded |
| People in the US (2010 Census) | 3,347 |
| US rank (2010) | 9,692 of 162,253 |
| How often | about 1 in every 92,245 people |
| Change since 2000 | +6.6% (3,140 in 2000) |
| Pronunciation | not recorded |
| Variant spellings | none recorded |

## Etymology

* As an Italian surname, from the noun castello (“fortress”). Also sometimes shortened from Castellano. * As a Catalan surname Castelló, of the same meaning, named after several towns. * As an Irish surname, from Mac Oisdealbhaigh, see Costello. * As an English surname, variant of Castlehow, named after several places, from castel + Howe. * As a Slovene surname, Americanized from Kastelic, compare Costello.

## Who carries it

Share of people named Castello in the 2010 US Census by the Census's own race and ethnicity groups. The Census suppresses a share when the count behind it is small.

| Group | Share |
|---|---|
| White (not Hispanic) | 59% |
| Black (not Hispanic) | 4.4% |
| Hispanic or Latino (any race) | 33% |
| Asian and Pacific Islander | 1.0% |
| American Indian and Alaska Native | 1.4% |
| Two or more races | 1.6% |

## Similar surnames

Castillo, Costello, Castle, Casteel, Castelli, Castille, Castilla, Castelo, Castile, Castell, Castel, Castellanos.

## How to read these numbers

A Census count is people alive and counted in 2010, not births, and names occurring fewer than 100 times are not published at all. Ethnicity shares are the Census's own categories.