Declining since 1990, #6,546 for girls today.
Popularity of Kayci since 1974
Babies named Kayci per year in U.S. Social Security records.
Data table (by decade)
| Decade | Girls |
|---|---|
| 1970s | 45 |
| 1980s | 314 |
| 1990s | 471 |
| 2000s | 362 |
| 2010s | 302 |
| 2020s | 159 |
Meaning & origin
Kayci is a modern respelling of the established Irish name Casey, which first appeared on U.S. birth records in 1974. The name reached its peak popularity in 1990, a year that saw many creative spellings of traditional names rise in fashion. By 2025 it had fallen to rank 6,546, with roughly 1 in 94,545 newborns receiving the name, reflecting the broader trajectory of falling popularity for 'y' and 'i' variant spellings since the 1990s. Despite its decline, Kayci remains a recognizable and distinctly feminine take on the classic Casey, appealing to parents seeking a name with Irish roots and a contemporary spelling.
Kayci is a modern respelling of the Irish surname Casey, which derives from the Gaelic Ó Cathasaigh meaning 'descendant of Cathasach', a personal name meaning 'vigilant' or 'watchful'. The name entered use as a given name, particularly in the United States, in the 20th century. The spelling Kayci emerged in the 1970s as part of a trend of substituting 'y' or 'i' for 'e' in names.
Nicknames & variants
Nicknames: Kay, Casey
Sibling names for Kayci
Names that share Kayci's style, for a brother or sister.
