Lillias — girls' name
194 babies named Lillias in U.S. Social Security records since 1892, with the highest year being 1918. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
37% of everyone ever named Lillias was born in this single decade.
12 babies were named Lillias in 1918 — its busiest year on record.
What the Data Says About Lillias
The Social Security Administration has registered 194 babies named Lillias between 1892 and 1938, spanning 47 consecutive years of U.S. birth records. As a girl's name, Lillias currently falls outside the top 1,000 girls' names for 1938. The name reached its historical peak in 1918, when 12 babies received it in a single year.
Decade-level aggregation shows that Lillias performed strongest in the 1920s, accumulating 72 births during that ten-year window. Across the 5 decades of recorded activity, Lillias shows notable generational variation in parental adoption.
No etymological entry is currently available for Lillias 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 194 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.
Lillias at a glance
Last recorded 1938Peak year
Current rank
Active since
Lillias popularity over time
Annual U.S. births registered with the Social Security Administration · 1938–1892
- Peak year (1918)
- 12
- Annual births at peak — across 47 years of records
No longer in the modern top-1000 — last recorded 1938.
194 total births across 47 years of SSA records. Peaked in 1918 with 12 births in a single year.
Lillias by decade
Total births in each ten-year window — peak vs trough at a glance
- Peak decade
- 1920s
- 72 births that decade — 37% of Lillias's all-time total
Lillias decade highlights
- Peak decade 72 births
- Runner-up 70 births
- Modern era share 2010s + 2020s
- Decades tracked with recorded births
1920s was Lillias's strongest decade
72 babies received the name during that ten-year window — about 37% of all-time use.
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Compare Lillias side by side: Lillias vs Lillian Lillias vs Lily Lillias vs Lillie
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Data Sources
Data as of 2024. Source: U.S. Social Security Administration (SSA).
Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications — National Data, 1892–1938 (ssa.gov/oact/babynames). National-level data includes all names with 5 or more occurrences in a given year.
State-level: Source: U.S. Social Security Administration, Baby Names — State-Level Files (namesbystate.zip). Includes all names with 5 or more occurrences per state per year; rarer names are excluded for privacy.