In — unisex name

What the Data Says About In

The Social Security Administration has registered 21 babies named In between 1954 and 1982, spanning 29 consecutive years of U.S. birth records. As a girl's name, In currently falls outside the top 1,000 girls' names for 1982. The name reached its historical peak in 1956, when 6 babies received it in a single year. In is classified as unisex in SSA records: the opposite-sex variant accounts for 5 additional births since 1992.

Decade-level aggregation shows that In performed strongest in the 1950s, accumulating 16 births during that ten-year window. Across the 2 decades of recorded activity, In shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Kansas, which accounts for 11 births — the largest state-level total in the dataset — followed by . In total, SSA state-level files list In in 1 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for In 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 21 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.