Irja — girls' name

What the Data Says About Irja

The Social Security Administration has registered 156 babies named Irja between 1910 and 1930, spanning 21 consecutive years of U.S. birth records. As a girl's name, Irja currently falls outside the top 1,000 girls' names for 1930. The name reached its historical peak in 1918, when 20 babies received it in a single year.

Decade-level aggregation shows that Irja performed strongest in the 1910s, accumulating 119 births during that ten-year window. Across the 3 decades of recorded activity, Irja shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Minnesota, which accounts for 9 births — the largest state-level total in the dataset — followed by Michigan. In total, SSA state-level files list Irja in 2 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Irja 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 156 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.