Illinois — unisex name

What the Data Says About Illinois

The Social Security Administration has registered 11 babies named Illinois between 1918 and 1920, spanning 3 consecutive years of U.S. birth records. As a girl's name, Illinois currently falls outside the top 1,000 girls' names for 1920. The name reached its historical peak in 1920, when 6 babies received it in a single year. Illinois is classified as unisex in SSA records: the opposite-sex variant accounts for 5 additional births since 1923.

Decade-level aggregation shows that Illinois performed strongest in the 1920s, accumulating 6 births during that ten-year window. Across the 2 decades of recorded activity, Illinois shows a stable profile with only moderate drift from its peak decade.

No etymological entry is currently available for Illinois 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 11 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.