Casy
- US rank
- Unranked
- Syllables
- 2
- Peak
- #6,371 in 1982
0 babies were named Casy in the US in 2025.
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US births per million girls, 1978–2025
US births per million boys, 1976–2025
Similar names
Popularity: U.S. Social Security Administration (babies with 5+ births per year).
Did you know?
A few things about Casy you might not know, from US birth records. Handy for convincing a partner, or a grandparent.
- HistoryCasy first shows up in US birth records in 1976, the first year at least 5 babies got it. It has been in use for 49 years since.
- Best yearIts best year was 1982, when it reached #6,371.
About the name Casy
Casy is a gender-neutral name of Irish origin. It has 4 letters and 2 syllables, starting with C and ending in “-asy”. US birth records list Casy for girls from 1978 to 2000, in 13 of those 23 years. Its best year was 1982, when it ranked #6,371 among girl names. It hasn't been given to 5 or more US babies in a year since 2000, so today it's a genuinely rare choice.
Origin:Irish names
| Decade | Babies per million | About 1 in |
|---|---|---|
| 1970s | 1.6 | 606,061 girls |
| 1980s | 3.0 | 328,947 girls |
| 1990s | 1.3 | 751,880 girls |
| 2000s | 2.8 | 357,143 girls |
| Decade | Babies per million | About 1 in |
|---|---|---|
| 1970s | 1.5 | 655,738 boys |
| 1980s | 3.5 | 288,184 boys |
| 1990s | 2.5 | 404,858 boys |
Other spellings of Casy
More Irish names
- Boy name: Liam · resolute protector
- Unisex name: Owen · well-born
- Girl name: Abigail · my father is joy
- Unisex name: Riley · rye clearing
- Unisex name: Logan · little hollow
- Unisex name: Nolan · descendant of Nuallán
- Girl name: Maeve · she who intoxicates
- Unisex name: Kennedy · helmeted head
Questions about the name Casy
What is the origin of the name Casy?
Casy has Irish roots in our records. Other Irish names include Liam, Owen, Abigail.
Is Casy a boy or girl name?
Both. Casy is used for boys and girls.
How popular is the name Casy?
Casy is rare: fewer than 5 US girls got it in 2025, and it was last given to 5 or more in 2000. It peaked at #6,371 in 1982.