Kailen
Below 5 births
2025 SSA
About Kailen
Kailen is a modern masculine name with several possible origins. It may be an alternate spelling of Kaelan (an Anglicized form of the Gaelic name Caolánn, meaning "slender" or "narrow"), or a variation of Kaylen, which blends Kay and the popular -en suffix. The name has a contemporary feel while maintaining a connection to traditional naming patterns. Kailen has gained modest popularity since the 1990s, appealing to parents seeking names with a modern sound but established roots. With its balanced two syllables and smooth pronunciation, Kailen works well across cultural contexts while remaining distinctive. The name carries a gentle yet masculine quality that works well throughout all stages of life.
Kailen is also given to girls.
Pronounced KAY-len.
As of October 2026, Kailen ranked #16339 in US births in 2024 SSA, peaked at #3468 in 1999.
Popularity & trends
Data table
| Year | US rank · girls | Births · girls | US rank · boys | Births · boys |
|---|---|---|---|---|
| 2014 | — | 0 | #2,866 | 41 |
| 2015 | — | 0 | #4,470 | 22 |
| 2016 | — | 0 | #3,189 | 36 |
| 2017 | — | 0 | #4,174 | 25 |
| 2018 | — | 0 | #3,938 | 27 |
| 2019 | — | 0 | #3,604 | 31 |
| 2020 | — | 0 | #3,166 | 36 |
| 2021 | — | 0 | #3,048 | 40 |
| 2022 | — | 0 | #4,039 | 27 |
| 2023 | — | 0 | #2,914 | 43 |
| 2024 | — | 0 | #3,182 | 38 |
| 2025 | — | 0 | #4,465 | 23 |