Holding steady.
Popularity of Cassity since 1976
Babies named Cassity per year in U.S. Social Security records.
Data table (by decade)
| Decade | Girls |
|---|---|
| 1970s | 15 |
| 1980s | 66 |
| 1990s | 144 |
| 2000s | 107 |
| 2010s | 26 |
| 2020s | 0 |
Meaning & origin
Cassity is a modern American name that first appeared in Social Security records in 1976, making it a relatively recent coinage. It reached its peak popularity in 1998, though it has never ranked among the top 1000 names, indicating modest but sustained use. The name is likely an elaborated variant of the more common Cassidy, itself an Anglicization of the Irish surname Ó Caiside. Cassity follows the trend of surname-inspired given names and the fashionable -y ending for girls in the late 20th century. While it has never cracked a top state list, its trajectory has been stable since the 1990s, suggesting a small but steady appeal. Parents drawn to Cassity often appreciate its similarity to Cassidy but with a distinctive spelling.
Cassity is a modern given name, likely an elaborated spelling or variant of Cassidy. Cassidy derives from the Irish surname Ó Caiside, meaning 'descendant of Caiside', a personal name possibly meaning 'curly-haired'. Cassity has been in use in the United States since the late 20th century, first recorded in 1976, and peaked in popularity in 1998.
Nicknames & variants
Nicknames: Cass, Cassie
Sibling names for Cassity
Names that share Cassity's style, for a brother or sister.

