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The short answer
Casey is a unisex name used in English. Behind the Name describes it this way: "From the Irish surname Casey, an Anglicized form of Ó Cathasaigh, a patronymic derived from the given name Cathassach. This name can be given in honour of Casey Jones (1863-1900), a train engineer who sacrificed his life to save his passengers." It ranked #320 for boys and #1065 for girls in the United States in 2025.
Meaning and etymology
According to Behind the Name, from the Irish surname Casey, an Anglicized form of Ó Cathasaigh, a patronymic derived from the given name Cathassach. This name can be given in honour of Casey Jones (1863-1900), a train engineer who sacrificed his life to save his passengers. The entry lists its usage as English.
Editorial confidence: likely
Popularity
Casey ranked #320 for boys and #1065 for girls in the United States in 2025. The figure comes from the Social Security Administration's national file for that year.
| Region | Year | Rank | Source |
|---|---|---|---|
| United States (boys) | 2025 | #320 | ssa-2025 |
| United States (girls) | 2025 | #1065 | ssa-2025 |
United States, 2025: #320 (Social Security Administration)
If you like this name
Names that Behind the Name files under the same origin (English) and that sit near Casey in the 2025 American rankings.
Similar by origin
Frequently asked questions
What does the name Casey mean?
Behind the Name does not give Casey a one-word meaning. It describes the name as follows: from the Irish surname Casey, an Anglicized form of Ó Cathasaigh, a patronymic.
Is Casey a popular name?
Casey ranked #320 for boys and #1065 for girls in the United States in 2025. (Social Security Administration data).
Is Casey a boy's or a girl's name?
Casey appears in both the boys' and girls' SSA lists for 2025, so it is used for both.
Sources
- Behind the Name: Meaning, origin and history of the name Casey — supports meaning, usage, pronunciation, variants.
- U.S. Social Security Administration: Popular Baby Names — national data, year of birth 2025 — supports popularity.
