Kacey is an anglicized variant of the Irish Cathasaigh ("vigilant in war") — also linked to the K-spelled diminutive of Katherine. Her songwriting on "Follow Your Arrow" (2013) made her a vocal LGBTQ+ ally in mainstream country music when that was still rare. Star-Crossed Tour (2022) crossed $1M per show. A top-1000 US baby name since 2014.
Subject of countless music industry profiles.
Kacey does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Kacey reduce to 9, The Giver. This is a traditional interpretive system, not a factual claim about the name.