Kassidy
- Pronunciation
- [Ka-ssi-dy]
- Gender
- Female
- Meaning
- Clever.
- Origin
- Celtic
About the Name Kassidy
Kassidy is a modern American spelling variant of Cassidy (see separate entry on Cassidy for the Old Irish surname etymology — meaning "clever" or "curly-haired," from Ó Caiside). The K-spelling Kassidy is essentially a 20th-21st century American invention, distinguishing the modern feminine usage from the historically masculine Cassidy.
The various spellings (Kassidy, Cassidy, Kasidy) are tracked separately by SSA. The Kassidy spelling specifically appeals to parents seeking a more visually distinctive feminine form. The name has been used predominantly for girls in modern American naming.
Kassidy's American climb is recent: the name climbed from outside the US top 1000 in 2005 to the US top 300 girls' rank by 2018 and the top 300 since. Notable contemporary bearers include American basketball player Kassidy Roberts; the contemporary fictional Kassidy of various contemporary novels; and various contemporary American social media influencers. The name's appeal sits in three contemporary American naming preferences: the in-built Cassidy-Irish-Gaelic surname pedigree, the popular three-syllable -idy ending family (Kassidy, Brittany, Mandy), and the modern visual presence with the K-spelling. Three flowing syllables, soft consonants, and tonal versatility from rural-American to upwardly-mobile-American. The name reads as distinctly contemporary American. Common nicknames Kass (the dominant warm short form, casual and warm), Kassi, Cassie (the related shorter form, a popular standalone name on its own), and the rare Sidie each carry distinct registers; the alternate spellings Cassidy (the more popular spelling), Kassidy, and Kasidy have their own SSA tracking. International forms include the original Old Irish Ó Caiside.
Source: U.S. Social Security Administration name data, 1880–2024 (methodology). By Marvin Tang.
Quick Facts About Kassidy
US Popularity History (2000–2024)
Annual US births named Kassidy by gender, from US Social Security Administration records. Peak year: 2000 with 1,007 girls named Kassidy (girl rank #314 that year).
Where it stands today: in 2024, ranked #978 for girls (265 US births). That's 664 places below its 2000 peak.
Source: US Social Security Administration. Limitations: US birth-certificate data only; names appearing fewer than 5 times in a given year are suppressed for privacy; spelling variants are counted separately. For names that ranked outside the US top 100 before year 2000, only the years they reached the top 100 are shown — the chart may have gaps for less-popular historical names.
Paste the snippet below on any HTML page. Includes a credit link back to 9BabyNames — please keep it intact.
Where in the US Is Kassidy Most Popular?
Average girl-name rank within each state across 2016–2025 SSA records. A lower number means the name appears closer to the top of that state's girls-name rankings — a per-capita measure that isn't biased toward large states. For Kassidy the strongest states are District of Columbia, Mississippi, New Mexico.
Strongest girls-name states
| # | State | Avg rank | Births |
|---|---|---|---|
| 1 | District of Columbia | #240 | 16 |
| 2 | Mississippi | #300 | 91 |
| 3 | New Mexico | #344 | 17 |
| 4 | Alabama | #395 | 117 |
| 5 | Arkansas | #444 | 39 |
| 6 | Virginia | #449 | 165 |
| 7 | Nevada | #460 | 26 |
| 8 | Louisiana | #460 | 98 |
| 9 | Iowa | #469 | 23 |
| 10 | Michigan | #482 | 193 |
Weakest girls-name states
| # | State | Avg rank | Births |
|---|---|---|---|
| 1 | New York | #910 | 93 |
| 2 | Minnesota | #854 | 29 |
| 3 | Texas | #804 | 318 |
| 4 | Washington | #778 | 27 |
| 5 | Colorado | #772 | 28 |
| 6 | Ohio | #768 | 113 |
| 7 | Illinois | #765 | 122 |
| 8 | California | #758 | 320 |
| 9 | Florida | #755 | 189 |
| 10 | Missouri | #731 | 39 |
Source: SSA state-level baby-name dataset 2016–2025. States with fewer than 3 years of data for Kassidy in this window are excluded. Births < 5 in a given state-year are suppressed by SSA for privacy.
Looking for names like Kassidy?
A dedicated page with 60+ related names — spelling variants, rhymes, alliterations, same-origin matches, and shared meaning concepts — lives at its own URL so each kind of similarity gets a deeper treatment than fits here.
Compare Kassidy to Other Popular Names
Side-by-side popularity charts and crossover years for Kassidy against today's most popular girls-name peers (top 8 by US births in the last 10 years of SSA records).