Kailyn
Girl name · #1827 in 2025 · Uniqueness 81/100
In 2025, 110 baby girls were named Kailyn, placing it at #1827 in the official national rankings. A decade ago it stood at #659, so the name has been falling over the past ten years. Roughly one in every 16,364 girls born in 2025 was named Kailyn.
The 44-year story
Kailyn first appears in the Social Security records in 1981, when 6 girls received the name. Its peak came in 2011, when 793 girls were named Kailyn — good for #397 that year. Today's parents encounter it on its way down the popularity curve, which for many parents is exactly the appeal. Following the curve matters more than today's snapshot: a name's position on its rise-peak-decline arc is the best predictor of how common it will feel in a kindergarten class five years from now.
Babies named Kailyn per year, 1880–2025. Source: SSA.
Unlock the 5-year forecast and compare Kailyn against up to 5 other names.
Uniqueness: will there be another Kailyn in class?
Kailyn scores 81 out of 100 on our uniqueness scale, which blends current rarity with five-year momentum — putting it in the "rare" band. A high score means genuine rarity — your Kailyn will likely be the only one in the room, with the occasional spelling-out as the price.
Where Kailyn is most common
Geography matters for names, and Kailyn is no exception. In 2025 the states with the most Kailyns were TX (15), CA (13), FL (8), GA (6), NC (6). Raw counts naturally favor populous states, but the spread still hints at where the name is part of the local naming culture.
Names like Kailyn
Statistically, parents drawn to Kailyn tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Kaelyn, Jaelyn, Joslyn, Joselyn, and Jazzlyn.
KaelynJaelynJoslynJoselynJazzlynJailynEmelynCailyn
Rank history (last 25 years)
| Year | Babies named Kailyn | Rank |
|---|---|---|
| 2025 | 110 | #1818 |
| 2024 | 133 | #1579 |
| 2023 | 155 | #1439 |
| 2022 | 158 | #1422 |
| 2021 | 180 | #1280 |
| 2020 | 193 | #1196 |
| 2019 | 247 | #1036 |
| 2018 | 264 | #992 |
| 2017 | 298 | #899 |
| 2016 | 355 | #801 |
| 2015 | 436 | #659 |
| 2014 | 606 | #512 |
| 2013 | 609 | #492 |
| 2012 | 623 | #493 |
| 2011 | 793 | #397 |
| 2010 | 696 | #443 |
| 2009 | 706 | #447 |
| 2008 | 706 | #446 |
| 2007 | 663 | #491 |
| 2006 | 626 | #492 |
| 2005 | 583 | #511 |
| 2004 | 533 | #533 |
| 2003 | 499 | #552 |
| 2002 | 438 | #589 |
| 2001 | 399 | #627 |
Frequently asked questions
Is Kailyn a popular girl name?
Kailyn ranked #1827 among girls in 2025 with 110 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #659.
When was the name Kailyn most popular?
Kailyn peaked in 2011, when 793 American girls received the name (ranked #397 that year). Since 2011 the name has declined from that high.
How rare is the name Kailyn?
In 2025, roughly 1 in 16,364 newborn American girls was named Kailyn. It scores 81/100 on our uniqueness scale (rarity blended with momentum), which we classify as "rare".
Data source: U.S. Social Security Administration name statistics, 1880–2025, national and state files. Counts reflect Social Security card applications; names with fewer than 5 occurrences in a state-year are suppressed by the SSA.