Holding steady.
Popularity of Casi since 1962
Babies named Casi per year in U.S. Social Security records.
Data table (by decade)
| Decade | Girls |
|---|---|
| 1960s | 12 |
| 1970s | 231 |
| 1980s | 444 |
| 1990s | 292 |
| 2000s | 85 |
| 2010s | 11 |
| 2020s | 5 |
Meaning & origin
Casi is a rare name that first appeared in U.S. birth records in 1962, which aligns with a mid-century trend of using the letter 'C' and the '-ie' or '-y' ending for girls' names. It reached its peak year in 1986, but even then remained outside the top 1000. The name has seen stable usage since, with no dramatic rise or decline. While no state has recorded significant use of the name, its origin likely stems from the popular surname Casey, which has been adapted into various spellings (see variants). As a modern coinage, Casi reflects a creative approach to naming, often chosen by parents seeking an uncommon yet familiar-sounding option.
Casi is likely a modern English variant of the Irish surname Casey, which is an anglicized form of the Gaelic Ó Cathasaigh meaning 'descendant of Cathasach,' a personal name meaning 'vigilant.' Alternatively, it may function as a short form of Cassandra, the Greek mythological name meaning 'shining upon men.' As a given name, Casi emerged in the mid-20th century, primarily in the United States, often as a creative respelling to add individuality.
Nicknames & variants
Sibling names for Casi
Names that share Casi's style, for a brother or sister.
