Càsey
given name · Latin script
Recorded as a female name· opposite-gender records fall within measured source noise
Càsey is a female given name written in the Latin script, with more bearers in the United States than in any other country: 165,300 people, counted by the Census Bureau in 2020. Recorded meaning: Anglicisation of an Irish surname Ó Cathasaigh (“descendant of (a person named) Watchful”). Càsey is also written Кейси in Cyrillic and 케이시 in Korean (Hangul).
- USUnited States1 in 2K(measured from records)
- AUAustralia≈1 in 2.3K
- NZNew Zealand≈1 in 3.6K
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.
- United States (measured from records)
- 3 (measured from records)
- Record sources
- 586 (measured from records)
- 1 in 2.0K (inferred from the name graph)
165,300 people, 2020
recorded for this name
corpus datasets behind its best-documented spelling
strongest: highest-authority source
United States
measured from records inferred from the name graph
Càsey in other scripts: Cyrillic and Korean (Hangul)
(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”).
Cited for this meaning 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 | ||||
|---|---|---|---|---|---|---|
| US United States | #393 | 165,300 | 1 in 2K | 95K | Casey | 586 |
| AU Australia | #355 | ≈12,000 est. | ≈1 in 2.3K | 80 | Casey | 213 |
| GB United Kingdom | #592 | ≈12,000 est. | ≈1 in 6K | 33 | Casey | 254 |
| CA Canada | #508 | ≈9,700 est. | ≈1 in 4.2K | 39 | Casey | 233 |
| PH Philippines | — | ≈3,600 est. | ≈1 in 33K | — | Casey | 95 |
| AL Albania | — | 2,252as Kejsi | 1 in 1.4K | 2.2K | Casey | 13 |
| NZ New Zealand | #340 | ≈1,500 est. | ≈1 in 3.6K | 20 | Casey | 115 |
165,300 people counted by Census Bureau — First Name Frequency 2020 by sex, 2020. 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 a female name in our records. Opposite-gender entries fall within the cross-gender noise we measure in the source data, so we don't report them as usage.
- Which countries have the most people named Càsey?
- In the United States, the national register counted about 165 thousand people named Càsey, more than in any other country we hold, where it is most often spelled casey. After it come Australia, United Kingdom, Canada and Philippines; the country table on this page ranks them.
- Where is Càsey most common?
- Càsey is densest in the United States, where the national register counts about 1 in 2.0 thousand people carrying 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 the United States, Càsey is the 393rd most common given name of 2,815,431 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” — ranked 334th in the United States (Census Bureau, 2020). Data snapshot 2026-10-13.