Rosilyn — girls' name

What the Data Says About Rosilyn

The Social Security Administration has registered 642 babies named Rosilyn between 1930 and 2023, spanning 94 consecutive years of U.S. birth records. As a girl's name, Rosilyn currently falls outside the top 1,000 girls' names for 2023. The name reached its historical peak in 1949, when 22 babies received it in a single year.

Decade-level aggregation shows that Rosilyn performed strongest in the 1950s, accumulating 141 births during that ten-year window. Across the 10 decades of recorded activity, Rosilyn shows a clear decline from its mid-century high. Geographically, the name is most concentrated in North Carolina, which accounts for 6 births — the largest state-level total in the dataset — followed by New York. In total, SSA state-level files list Rosilyn in 2 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Rosilyn 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 642 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.