Kacy
Gender: Unisex
Meaning: Alert, watchful, vigorous
Origin: Irish (variant)
Popularity: Ranked #8594 in 2025 with 12 babies born.
History: A variant or related form of Kacee, meaning alert, watchful, vigorous.
Similar names: kacyn, kacee, kacey, kacie, kay, kayah, kaicyn, karcyn
Name length: 4 letters
How common is Kacy? About 1 in 151,296 babies born in 2025 were named Kacy, or roughly 0.1 per day in the United States.
Explore more baby names at BabyNa.me — 29,000+ names with meanings, origins, and popularity trends.
Loading name...
Frequently asked about Kacy
What does the name Kacy mean?
Kacy means “Alert, watchful, vigorous” from Irish (variant) roots.
What is the origin of the name Kacy?
Kacy has Irish (variant) origin. The traditional meaning is “Alert, watchful, vigorous”.
How popular is Kacy?
Kacy ranked #8362 in 2025 — given to 12 babies that year.
When was Kacy most popular?
Kacy peaked in 1990 with 196 babies registered that year.
Is Kacy a boy or girl name?
Kacy is used for both boys and girls. In the records, about 17% of Kacys are boys and 83% are girls.
Is the name Kacy rising or falling in popularity?
Kacy has fallen 2695 spots in the rankings over the last 5 years — from #5667 in 2020 to #8362 in 2025.
How long has Kacy been recorded?
Kacy appears in birth records across 69 years — from 1956 through 2025.