Kailyn
- Pronunciation
- [Kai-lyn]
- Gender
- Female
- Meaning
- Variant Of Kay And Kayla. Keeper Of The Keys: Pure.
- Origin
- English
About the Name Kailyn
Kailyn is a modern American respelling in the broad Kay-/Kai- + -lyn naming family, with no independent ancient etymology of its own. The cluster it belongs to draws loosely on the Old Gaelic Caolinn, sometimes interpreted as "slender" or "fair," as well as associations with the Greek katharos, meaning "pure," that filtered through Katherine and its derivatives. Popular interpretations link the name to "keeper of the keys" or "pure," reflecting these layered sources. Kailyn's appeal in the early twenty-first century lay in its lilting two-syllable rhythm, its fashionable -lyn ending, and the bright, open vowel of its first syllable — a combination that resonated strongly with American parents during the 2000s and early 2010s.
Kailyn entered the US Social Security top-1000 in 2000 and climbed to its peak of #397 in 2011, demonstrating a genuine rise rather than an immediate plateau. The last year it appeared in the top-1000 was 2018, when it ranked #992 with 264 girls. Across its roughly eighteen-year run, more than 10,200 girls were named Kailyn within the SSA top-1000 era. Variants in this expansive spelling family include Kaelene, Kaelin, Kaelyn, Kaelynn, Kailan, Kailene, Kailin, Kailynne, Kalan, Kalen, Kalin, Kalyn, Kalynn, Kaylan, Kayleen, Kaylen, Kaylyn, and Kaylynn — a reminder of how inventively American parents have explored this sound over the past generation.
Source: U.S. Social Security Administration name data, 1880–2024 (methodology). By Marvin Tang.
Quick Facts About Kailyn
US Popularity History (2000–2018)
Annual US births named Kailyn by gender, from US Social Security Administration records. Peak year: 2011 with 793 girls named Kailyn (girl rank #397 that year).
Where it stands today: in 2018, ranked #992 for girls (264 US births). That's 595 places below its 2011 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.
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Where in the US Is Kailyn 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 Kailyn the strongest states are Mississippi, Alabama, Louisiana.
Strongest girls-name states
| # | State | Avg rank | Births |
|---|---|---|---|
| 1 | Mississippi | #438 | 30 |
| 2 | Alabama | #579 | 52 |
| 3 | Louisiana | #611 | 43 |
| 4 | South Carolina | #641 | 68 |
| 5 | Georgia | #679 | 125 |
| 6 | North Carolina | #743 | 97 |
| 7 | Tennessee | #766 | 38 |
| 8 | Wisconsin | #768 | 19 |
| 9 | Michigan | #820 | 30 |
| 10 | Ohio | #835 | 36 |
Weakest girls-name states
| # | State | Avg rank | Births |
|---|---|---|---|
| 1 | Texas | #1,052 | 115 |
| 2 | Florida | #934 | 77 |
| 3 | Virginia | #874 | 45 |
| 4 | Ohio | #835 | 36 |
| 5 | Michigan | #820 | 30 |
| 6 | Wisconsin | #768 | 19 |
| 7 | Tennessee | #766 | 38 |
| 8 | North Carolina | #743 | 97 |
| 9 | Georgia | #679 | 125 |
| 10 | South Carolina | #641 | 68 |
Source: SSA state-level baby-name dataset 2016–2025. States with fewer than 3 years of data for Kailyn in this window are excluded. Births < 5 in a given state-year are suppressed by SSA for privacy.
Variant Forms
| Name | Meaning | Gender | Origin |
|---|---|---|---|
| Kaelene | Variant Of Kay And Kayla. Keeper Of The Keys: Pure. | Female | English |
| Kaelin | Variant Of Kay And Kayla. Keeper Of The Keys: Pure. | Female | English |
| Kaelyn | Variant Of Kay And Kayla. Keeper Of The Keys: Pure. | Female | English |
| Kaelynn | Variant Of Kay And Kayla. Keeper Of The Keys: Pure. | Female | English |
| Kailan | Variant Of Kay And Kayla. Keeper Of The Keys: Pure. | Female | English |
| Kailene | Variant Of Kay And Kayla. Keeper Of The Keys: Pure. | Female | English |
| Kailin | Variant Of Kay And Kayla. Keeper Of The Keys: Pure. | Female | English |
| Kailynne | Variant Of Kay And Kayla. Keeper Of The Keys: Pure. | Female | English |
| Kalan | Variant Of Kay And Kayla. Keeper Of The Keys: Pure. | Female | English |
| Kalen | Irish/Celtic Name Meaning "Warrior." | Male | Celtic |
| Kalin | Variant Of Kay And Kayla. Keeper Of The Keys: Pure. | Female | English |
| Kalyn | Variant Of Kay And Kayla. Keeper Of The Keys: Pure. | Female | English |
| Kalynn | Variant Of Kay And Kayla. Keeper Of The Keys: Pure. | Female | English |
| Kaylan | Variant Of Kay And Kayla. Keeper Of The Keys: Pure. | Male | English |
| Kayleen | Variant Of Kay And Kayla Keeper Of The Keys: Pure. | Female | English |
| Kaylen | Variant Of Kay And Kayla. Keeper Of The Keys: Pure. | Female | English |
| Kaylyn | Variant Of Kay. Keeper Of The Keys: Pure. Also Kayla Is A Character On Daytime TV Days Of Our Lives. | Female | English |
| Kaylynn | Variant Of Kay And Kayla. Keeper Of The Keys: Pure. | Female | English |
Looking for names like Kailyn?
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 Kailyn to Other Popular Names
Side-by-side popularity charts and crossover years for Kailyn against today's most popular girls-name peers (top 8 by US births in the last 10 years of SSA records).