Kacey

♀ Girl

Pronounced KAY-see /ˈkeɪ.si/High

Meaning: Vigilant, watchful; a K-spelling variant of Casey, from Irish Gaelic Cathasach (watchful)High

In 30 seconds: A K-spelling variant of Casey meaning 'vigilant' or 'watchful' in Irish Gaelic. The Kacey spelling is one of several (Casey, Kasey, Kacy) that split the phonetic form into differently initial-lettered variants.

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Origin HighIrish

MeaningVigilant, watchful; a K-spelling variant of Casey, from Irish Gaelic Cathasach (watchful)

U.S. rank (2025)#1118 ↘ Falling

2025 U.S. births211 girls (0.01% of U.S. girls)

Peak year1991

Total births (all-time)≈ 11,960

Popularity in the U.S. · SSA data

U.S. births per year (Social Security Administration, 1880–present). Pink marker = peak year.

SSA data updated May 2026. How we source & verify this data.

History & Origin

Kacey is a K-spelling variant of Casey (Irish Gaelic Cathasach: vigilant). The K spelling distinguishes it visually from the C and the Kasey variants while preserving identical pronunciation.

Kacey appeared in U.S. birth data from the 1990s and ranked #1093 for girls in 2024. Country singer Kacey Musgraves has given the spelling a contemporary musical profile.

Did you know? Country music star Kacey Musgraves has made this particular spelling highly visible — her Grammy-winning albums Golden Hour (2018) and Star-Crossed (2021) gave the Kacey spelling a distinctly contemporary musical identity.

Overall data confidence 87%

Behind the Name — Casey — Irish Gaelic etymologyU.S. Social Security Administration — popularity data

Variations

CaseyKaseyKacy

Nicknames

Kace

Famous Bearers

★Kacey Musgraves (1988–present)
American country-pop singer-songwriter and multiple Grammy Award winner whose albums include Golden Hour (2018).

If you like Kacey…

Casey— the standard C-spelling of the same Irish name

Kasey— the Ka- spelling variant sitting between Casey and Kacey

Lacey— rhyming -acey name in the same friendly two-syllable cohort

Stacy— two-syllable -acey name from the same era

Explore names like Kacey

By themeunisex two-syllable irish variant-spelling k-spelling

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Frequently Asked

What does the name Kacey mean?

Kacey means 'vigilant' or 'watchful,' a K-spelling variant of Casey, from Irish Gaelic Cathasach.

How do you pronounce Kacey?

It's said KAY-see — two syllables, stress on the first.

Is Kacey a boy or girl name?

Kacey appears primarily in girls' data in recent U.S. charts.

How popular is Kacey?

Kacey ranked #1093 for U.S. girls in 2024.