Kacy is a girl name with a rare feel, drawn from real birth records. Below you'll find what Kacy means and where it comes from, plus how many babies have been named Kacy across the United States, UK, Ireland and New Zealand, how popular Kacy has been over the decades, and the year it peaked.
Kacy is a girl name of Irish (Gaelic) origin meaning “vigilant, watchful”. A variant spelling of Casey or the initials K.C.
| Country | Births on record |
|---|---|
| United States since 1880 | 6,047 births |
| England & Wales since 1996 | 363 births |
| Scotland since 1974 | 18 births |
| Ireland since 1964 | 15 births |
Counts come from official national birth-registration statistics: U.S. Social Security Administration, England & Wales (Office for National Statistics), Scotland (National Records of Scotland), Northern Ireland (NISRA), Ireland (Central Statistics Office) and New Zealand (Dept. of Internal Affairs). Coverage spans differ, so totals aren't directly comparable across countries.
Babies named Kacy per year, United States (1956 to 2025). United States peaked in 1990 (222/yr) · England & Wales peaked in 2005 (46/yr) · Ireland peaked in 2002 (3/yr) · Scotland peaked in 2003 (3/yr).
Kacy is an uncommon baby name in the United States. It was most common in 1990, when it ranked #1,521 nationally (given to 222 babies that year).
Kasey · Kayce · Kacie · Kacey · Kaci · Kase · Kaycee · Kace
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