Declan — #131 US boys' name

What the Data Says About Declan

The Social Security Administration has registered 55,965 babies named Declan between 1951 and 2024, spanning 74 consecutive years of U.S. birth records. As a boy's name, Declan currently holds the #131 rank among boys for 2024. The name reached its historical peak in 2019, when 3,971 babies received it in a single year.

Decade-level aggregation shows that Declan performed strongest in the 2010s, accumulating 31,104 births during that ten-year window. Across the 8 decades of recorded activity, Declan shows notable generational variation in parental adoption. Geographically, the name is most concentrated in California, which accounts for 4,492 births — the largest state-level total in the dataset — followed by New York and Pennsylvania. In total, SSA state-level files list Declan in 51 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Declan 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 55,965 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.