Casi
- US rank
- Unranked
- Syllables
- 2
- Peak
- #2,025 in 1986
0 babies were named Casi in the US in 2025.
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US births per million girls, 1962–2025
Similar names
Popularity: U.S. Social Security Administration (babies with 5+ births per year).
Did you know?
A few things about Casi you might not know, from US birth records. Handy for convincing a partner, or a grandparent.
- HistoryCasi first shows up in US birth records in 1962, the first year at least 5 babies got it. It has been in use for 63 years since.
- Best yearIts best year was 1986, when it reached #2,025.
About the name Casi
Casi is a gender-neutral name of Irish origin. It has 4 letters and 2 syllables, starting with C and ending in “-asi”. US birth records list Casi for girls from 1962 to 2022, in 44 of those 61 years. Its best year was 1986, when it ranked #2,025 among girl names. It hasn't been given to 5 or more US babies in a year since 2022, so today it's a genuinely rare choice.
Origin:Irish names
| Decade | Babies per million | About 1 in |
|---|---|---|
| 1960s | 0.8 | 1,212,121 girls |
| 1970s | 15 | 66,401 girls |
| 1980s | 26 | 38,730 girls |
| 1990s | 16 | 62,305 girls |
| 2000s | 4.6 | 215,983 girls |
| 2010s | 0.6 | 1,612,903 girls |
| 2020s | 1.0 | 1,000,000 girls |
Other spellings of Casi
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 Casi
What is the origin of the name Casi?
Casi has Irish roots in our records. Other Irish names include Liam, Owen, Abigail.
Is Casi a boy or girl name?
Both. Casi is used for boys and girls.
How popular is the name Casi?
Casi is rare: fewer than 5 US girls got it in 2025, and it was last given to 5 or more in 2022. It peaked at #2,025 in 1986.