Trillian — unisex name

What the Data Says About Trillian

The Social Security Administration has registered 37 babies named Trillian between 2007 and 2015, spanning 9 consecutive years of U.S. birth records. As a girl's name, Trillian currently falls outside the top 1,000 girls' names for 2015. The name reached its historical peak in 2008, when 7 babies received it in a single year. Trillian is classified as unisex in SSA records: the opposite-sex variant accounts for 5 additional births since 2015.

Decade-level aggregation shows that Trillian performed strongest in the 2000s, accumulating 20 births during that ten-year window. Across the 2 decades of recorded activity, Trillian shows a stable profile with only moderate drift from its peak decade.

No etymological entry is currently available for Trillian 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 37 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.