MallowbyNames

Casie

KAY-see · Alert, watchful, or a variant of Casey, which itself can be a transferred surname or a short form of Catherine.

2025 rank (girls)
#13,208
Babies named in 2025
6
Peak popularity
1983
2025 frequency
1 in 267,878 girls
Usually for
Girls
Trend
Rising since 2014

A 1980s favorite, climbing again.

Popularity of Casie since 1962

Babies named Casie per year in U.S. Social Security records.

77154231198020002020Most births 1983Girls
Data table (by decade)
DecadeGirls
1960s58
1970s874
1980s2,126
1990s1,262
2000s342
2010s92
2020s46

Meaning & origin

Casie, first recorded as a given name in 1962, saw its peak popularity in 1983 before declining in use. Recently, it has been rising again since 2014, showing a modest revival. It is a feminized spelling of Casey, which originated as an Irish surname meaning 'vigilant.' Though never extremely common, Casie has maintained steady usage, reflecting the ongoing appeal of the base name Casey. The trajectory since 2014 suggests a renewed interest among parents seeking a familiar yet distinct name.

Casie is a variant spelling of Casey, an Irish surname derived from the Gaelic Ó Cathasaigh, meaning 'descendant of Cathasach,' a personal name meaning 'vigilant' or 'watchful.' As a given name, Casey gained popularity in the mid-20th century, often used for both genders but predominantly for girls in recent decades. The spelling Casie emerged as a feminine variant, following the trend of names ending in -ie.

Nicknames & variants

Nicknames: Case, Cassie

Variants: Casey, Kacey, Kacie, Kasey, Cayce

Sibling names for Casie

Names that share Casie's style, for a brother or sister.

Sisters: Katie, Megan, Brianna, Erin, Lauren

Brothers: Ryan, Sean, Kevin, Patrick, Dylan

A parent animal hugging its little one, the personalized name page

C is for Casie, our favorite little girl.

C is for Casie…”

In a Mallowby alphabet book, Casie's letter becomes Casie's page: hand-illustrated, printed hardcover or paperback, made just for them.

Make Casie's book

Books for siblings or grandkids? The second book is 15% off.

Questions parents ask

What does the name Casie mean?
Casie is a variant of Casey, meaning 'vigilant' or 'watchful' from the Irish Gaelic Ó Cathasaigh.
How popular is the name Casie?
In the latest year (2025), Casie ranked 13,208th in the U.S., with about 1 in 267,878 births. Its peak popularity was in 1983.
Is Casie a boy or girl name?
Casie is predominantly used as a girl's name, though the variant Casey can be unisex.