Dillyn — boys' name

What the Data Says About Dillyn

The Social Security Administration has registered 412 babies named Dillyn between 1991 and 2023, spanning 33 consecutive years of U.S. birth records. As a boy's name, Dillyn currently falls outside the top 1,000 boys' names for 2023. The name reached its historical peak in 1999, when 24 babies received it in a single year. Dillyn is classified as unisex in SSA records: the opposite-sex variant accounts for 222 additional births since 2002.

Decade-level aggregation shows that Dillyn performed strongest in the 2000s, accumulating 186 births during that ten-year window. Across the 4 decades of recorded activity, Dillyn shows a clear decline from its mid-century high.

No etymological entry is currently available for Dillyn 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 412 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.