Kacy
Respelling of Casey, which comes from the Irish surname O Cathasaigh, descendant of Cathasach, a personal byname meaning watchful or vigilant.
Kacy in 2025
Kacy was given to 22 babies in the United States in 2025 — 10 boys and 12 girls, making it the 9,789th most popular name of the year. That is roughly one in every 150,697 babies born.
The history of Kacy
Kacy reached its highest point in 1990, when 222 babies were given the name, ranking 1,520th that year. Its best-ever ranking was 1,455th, in 1987.
Across the 70 years of records since 1956, 6,047 babies have been named Kacy. Half of them were born before 1990, which places the name's centre of gravity with Millennials.
Kacy by decade
| Decade | Babies named Kacy | Best rank |
|---|---|---|
| 1950s | 34 | 6,229 |
| 1960s | 167 | 2,829 |
| 1970s | 904 | 1,489 |
| 1980s | 1,801 | 1,455 |
| 1990s | 1,629 | 1,520 |
| 2000s | 918 | 2,796 |
| 2010s | 441 | 5,231 |
| 2020s | 153 | 7,716 |
Where Kacy is heading
Kacy has fallen 51% over the past decade, from 45 babies in 2015 to 22 in 2025.
Names like Kacy
Names that rose and fell at the same time as Kacy.