Declining since 2002.
Popularity of Kasidy since 1981
Babies named Kasidy per year in U.S. Social Security records.
Data table (by decade)
| Decade | Girls |
|---|---|
| 1980s | 19 |
| 1990s | 175 |
| 2000s | 272 |
| 2010s | 124 |
| 2020s | 22 |
Meaning & origin
Kasidy entered U.S. naming records in 1981, a relatively late arrival compared to many traditional names. The name reached its peak popularity in 2001, likely riding the wave of similar-sounding trend names like Cassidy and Kelsey. However, it has been on a steady decline since around 2002, falling in usage each year for over two decades. Despite its downturn, Kasidy remains a recognizable choice, particularly among parents drawn to its modern, casual feel and Irish surname heritage. The name's trajectory reflects broader naming trends: the rise of surnames as given names and the popularity of names ending in the '-ee' sound for girls.
Kasidy is a modern spelling variant of Cassidy, itself an anglicized form of the Irish surname Ó Caiside meaning 'descendant of Caiside'. The original Gaelic byname Caiside likely meant 'curly-haired' or 'quick-witted'. As a given name, it emerged in the United States in the late 20th century, initially used for both sexes but predominantly for girls.
Nicknames & variants
Nicknames: Kassie, Kass, Sidy
Sibling names for Kasidy
Names that share Kasidy's style, for a brother or sister.
