# Casey (surname)

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

A surname from Irish.

| Field | Value |
|---|---|
| Origin | Irish |
| Type | patronymic, formed from a father’s (or ancestor’s) given name |
| People in the US (2010 Census) | 66,556 |
| US rank (2010) | 504 of 162,253 |
| How often | about 1 in every 4,639 people |
| Change since 2000 | +2.7% (64,815 in 2000) |
| Pronunciation | /ˈkeɪsi/, 2 syllables |
| Variant spellings | none recorded |

## Etymology

Anglicisation of an Irish surname Ó Cathasaigh (literally “descendant of (a person named) Watchful”).

## Who carries it

Share of people named Casey 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) | 87% |
| Black (not Hispanic) | 7.5% |
| Hispanic or Latino (any race) | 2.4% |
| Asian and Pacific Islander | 0.7% |
| American Indian and Alaska Native | 0.7% |
| Two or more races | 1.9% |

## Similar surnames

Case, Causey, Cass, Cossey, Cosey, Caso, Chase, Cash, Caskey, Cage, Chasse, Caughey.

## 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.