Cassidi
- US rank
- Unranked
- Syllables
- 3
- Peak
- #2,703 in 1999
0 babies were named Cassidi in the US in 2025.
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US births per million girls, 1977–2025
Similar names
Popularity: U.S. Social Security Administration (babies with 5+ births per year).
Did you know?
A few things about Cassidi you might not know, from US birth records. Handy for convincing a partner, or a grandparent.
- HistoryCassidi first shows up in US birth records in 1977, the first year at least 5 babies got it. It has been in use for 48 years since.
- Best yearIts best year was 1999, when it reached #2,703.
About the name Cassidi
Cassidi is a girl name of Irish origin. It has 7 letters and 3 syllables, starting with C and ending in “-idi”. US birth records list Cassidi for girls from 1977 to 2020, in 42 of those 44 years. Its best year was 1999, when it ranked #2,703 among girl names. It hasn't been given to 5 or more US babies in a year since 2020, so today it's a genuinely rare choice.
Origin:Irish names
| Decade | Babies per million | About 1 in |
|---|---|---|
| 1970s | 3.0 | 337,079 girls |
| 1980s | 7.5 | 134,228 girls |
| 1990s | 17 | 59,453 girls |
| 2000s | 15 | 67,249 girls |
| 2010s | 7.7 | 129,366 girls |
| 2020s | 7.4 | 135,135 girls |
Other spellings of Cassidi
More Irish girl names
- Girl name: Abigail · my father is joy
- Unisex name: Riley · rye clearing
- Girl name: Maeve · she who intoxicates
- Unisex name: Kennedy · helmeted head
- Unisex name: Rylee · rye clearing
- Unisex name: Sloane · raider
- Unisex name: Alani · orange tree
- Girl name: Everleigh · boar clearing
Questions about the name Cassidi
What is the origin of the name Cassidi?
Cassidi has Irish roots in our records. Other Irish names include Abigail, Riley, Maeve.
Is Cassidi a boy or girl name?
Cassidi is a girl name.
How popular is the name Cassidi?
Cassidi is rare: fewer than 5 US girls got it in 2025, and it was last given to 5 or more in 2020. It peaked at #2,703 in 1999.