Ko — boys' name

What the Data Says About Ko

The Social Security Administration has registered 75 babies named Ko between 1985 and 2021, spanning 37 consecutive years of U.S. birth records. As a boy's name, Ko currently falls outside the top 1,000 boys' names for 2021. The name reached its historical peak in 2016, when 8 babies received it in a single year. Ko is classified as unisex in SSA records: the opposite-sex variant accounts for 10 additional births since 1988.

Decade-level aggregation shows that Ko performed strongest in the 2010s, accumulating 28 births during that ten-year window. Across the 5 decades of recorded activity, Ko shows notable generational variation in parental adoption.

No etymological entry is currently available for Ko 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 75 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.