Càsey
given name · Latin script
Recorded as a female name· opposite-gender records fall within measured source noise
Càsey is a given name written in the Latin script, with more bearers in China than in any other country. Recorded meaning: Anglicisation of an Irish surname Ó Cathasaigh (“descendant of (a person named) Watchful”).
- USUnited States1 in 2K(measured from records)
- AUAustralia≈1 in 2.4K
- NZNew Zealand≈1 in 3.8K
carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). Where a country counts another spelling of the name rather than Càsey itself, the figure is that spelling’s, and it is named. One hue, darker where it is more common; hover a country for its figure.
- China (inferred from the name graph)
- 3 (measured from records)
- Sources
- 586 (measured from records)
- 1 in 2.0K (inferred from the name graph)
≈190,000 people, est.
recorded for this name
Highest-authority source
United States
measured from records inferred from the name graph
Spellings & scripts(measured from records)
Locally spelled Casey in US United States, AU Australia, GB United Kingdom and 4 more.
Spellings marked ● are how people bearing the name write it in our records, and ○ marks a model's transliteration; click a spelling to open its page.
Meaning & origin(measured from records)
Anglicisation of an Irish surname Ó Cathasaigh (“descendant of (a person named) Watchful”).
Sources 7
- A concise dictionary of first names
- A dictionary of surnames
- DUDEN Lexikon der Vornamen
- The Oxford Dictionary of Family Names in Britain and Ireland
- The Oxford Names Companion - The definitive guide to Surnames, First Names, and Place Names of the British Isles
Attested across 17 languages in the etymology graph.
Where in the world(measured from records)
Càsey counted together with the spellings and other-language forms grouped with it. Where a register counted another spelling, the row names it.
Sorted by bearers: national registers' counts, and Mondonomo's estimates (≈, est.) where no register counts.
| Country | Most common spelling | Sources | ||||
|---|---|---|---|---|---|---|
| CN China | — | ≈190,000 est. | ≈1 in 7.2K | — | Casey | 39 |
| US United States | #393 | 165,300 | 1 in 2K | 95K | Casey | 586 |
| GB United Kingdom | #592 | ≈10,000 est. | ≈1 in 6.3K | 33 | Casey | 254 |
| AU Australia | #355 | ≈10,000 est. | ≈1 in 2.4K | 80 | Casey | 213 |
| CA Canada | #508 | ≈8,300 est. | ≈1 in 4.5K | 39 | Casey | 233 |
| AL Albania | — | 2,252as Kejsi | 1 in 1.4K | 2.2K | Casey | 13 |
| NZ New Zealand | #340 | ≈1,300 est. | ≈1 in 3.8K | 20 | Casey | 115 |
Exact figures are national registers' own counts, while figures marked ≈ and est. are Mondonomo’s estimates, counted from our sources and calibrated against those registers; hover one for how far to trust it in that country. A dash means neither exists.
Registers cited: Census Bureau — First Name Frequency 2020 by sex; NSW BDM — Popular baby names (1952–present); NRS — Baby names Scotland full list (1974–present); Alberta Open Government — Frequency and Ranking of Baby Names by Year and Gender; DIA — Baby name popularity (1900–present); INSTAT Albania — Search the name (given-name counts). Figures without a register are Mondonomo estimates; see Methodology.
Country figures for a list of names, at full precision, are available under licence rather than by scraping this table (how that works).
Evidence(measured from records)
No register attests this spelling yet
Frequently asked questions
- What does the name Càsey mean, and where does it come from?
- Anglicisation of an Irish surname Ó Cathasaigh (“descendant of (a person named) Watchful”). Recorded by A concise dictionary of first names and A dictionary of surnames and 5 other sources.
- Is Càsey a male or female name?
- Càsey is recorded for both men and women. We don't publish a percentage split: a record's gender belongs to the person and is attached to every given name on that record, so names in cultures where a name string also carries a parent's or spouse's given name pick up large cross-gender counts.
- In which country does Càsey have the most bearers?
- Mondonomo estimates about 193 thousand people named Càsey in China, more than in any other country we hold, where it is most often spelled casey.
- Where is Càsey most common?
- Measured as a share of residents rather than as a count, Càsey is densest in the United States — about 1 in 2.0 thousand people — even though China holds more of our records for it.
- How common is the name Càsey?
- In the United States, the national register counted 165,300 people named Càsey in 2020, about 1 in 2.0 thousand residents.
- How common is Càsey compared with other names?
- In New Zealand, Càsey is the 340th most common given name of 26,737 given names recorded there.
What do you want to know about Càsey?
Nobody replies to these one by one, but what readers ask decides what these pages answer next.
Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/c%C3%A0seyThe payload this page is built from: spellings and scripts, countries and languages, related names, and the registers that attest the form. It takes a free API key (1,000 requests a day), which returns what this page shows everyone; the full country table, every register citation and the year-by-year series come with a licensed key, as does bulk access.
About this data
measured from records inferred from the name graph machine-generated
These figures come from the data snapshot of and will change as it is rebuilt.
Statistics are aggregated from the Mondonomo name corpus; related names and etymology are inferred from the name graph; pronunciation and any machine-marked transliterations are model-generated. Read how the numbers are made, including their known failure modes, and where the data comes from.
Reference works we consult — surname dictionaries, official name registers, Wikidata and Wiktionary — are named directly, beside the claims they support. The per-country source counts also include datasets of person records: we publish how many there are and their authority tier, but not their names.
Cite this page Mondonomo, “Càsey” — the 340th most common given name in New Zealand. Data snapshot 2026-10-10.