Cailyn — #3284 US girls' name

What the Data Says About Cailyn

The Social Security Administration has registered 5,509 babies named Cailyn between 1979 and 2024, spanning 46 consecutive years of U.S. birth records. As a girl's name, Cailyn currently holds the #3284 rank among girls for 2024. The name reached its historical peak in 2009, when 401 babies received it in a single year.

Decade-level aggregation shows that Cailyn performed strongest in the 2000s, accumulating 2,445 births during that ten-year window. Across the 6 decades of recorded activity, Cailyn shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Texas, which accounts for 431 births — the largest state-level total in the dataset — followed by California and Florida. In total, SSA state-level files list Cailyn in 35 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Cailyn in our reference dataset. These figures derive from SSA's annual national and state-level name files, which include any name appearing at least five times in a given year or state-year; names below that threshold are suppressed for privacy and therefore excluded from the totals shown here. The 5,509 total represents a lower bound — actual usage may be higher in years or states where the count fell below the disclosure floor. This page is provided for informational and research purposes only and does not constitute personal, legal, or naming advice.