Kacy
A girls’ name of Irish origin, meaning vigilant; a form of Casey.
Babies a year
41
the US, 2017
Rarity
Very rare
among names in use
US popularity
—
outside the top 1000
UK popularity
—
outside the ONS list
Kacy by the numbers
Kacy was given to 41 American babies in 2017, the most recent full year we hold.
Its American peak was 196 babies in 1990, so it is a 1990s name that has since fallen a long way.
Spelled almost the same
Other names in the records within a letter or two of Kacy. Close spellings are not always related names, but they are usually worth seeing together.
Sounds like Kacy
Names that are said the same way as Kacy, however they are written. Sounding alike does not mean they share a history.
- Cassiehearkener; a diminutive of cassandra78 in England and Wales (2025)
- Kacievigilant; a modern respelling of Casey110 in the US (2017)
- Kassieshe who entangles men; a form of Kassandra63 in the US (2017)
- Kaycievigilant; a form of Casey41 in the US (2017)
- Casiehearkening or feminine form of Casey14 in the US (2017)
- Kasivaranasi; the holy city; shining13 in the US (2017)
Names about as common as Kacy
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