Cailyn

Did you know?

A few things about Cailyn you might not know, from US birth records. Handy for convincing a partner, or a grandparent.

• 👶How commonAbout 1 in every 40,161 baby girls born in the US in 2025 was named Cailyn, 40 babies in all. In a typical school of 500 kids, your Cailyn would very likely be the only one.
• 📜HistoryCailyn first shows up in US birth records in 1979, the first year at least 5 babies got it. It has been in use for 46 years since.
• 🏆Best yearIt was far more popular in 2009, when it ranked #724. Today it's #3,712, so it could be due a comeback.
• 📉Then vs nowCailyn was 3.6× more common in 2000 than it is today. In 2000 it was given to about 1 in 11,136 baby girls; in 2025, about 1 in 40,161.
• 🍂TrendCailyn has slipped 1,244 places over the last five years and now sits at #3,712. Good news if you want a familiar name that fewer kids will share.
• ⚖️Boy or girlCailyn is given to both boys and girls: 89% of the 45 babies named Cailyn in 2025 were girls. That makes it one of the names that truly works for either.

About the name Cailyn

Cailyn is a girl name of American origin. It has 6 letters and 2 syllables, starting with C and ending in “-lyn”. US birth records list Cailyn for girls from 1979 to 2025, in 45 of those 47 years. Its best year was 2009, when it ranked #724 among girl names. In 2025 it ranked #3,712, with 40 babies.

Origin:American names