Total births
637
Girls' name · since 1880
Lillis
Since 1880, U.S. Social Security records show 637 babies named Lillis, peaking in 1919. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.
- 637
- total births
- 1880–1963
- years on record
- 1920s
- peak decade
- 27%
- born in that decade
637 girls have been named Lillis since 1880, though it isn't currently a top-ranked name.
Social Security Administration records show Lillis recorded 637 times among girls since 1880, though it doesn't currently rank among the most-used girls names, peaking in the 1920s. This profile derives year-by-year birth trends, decade totals, and state-level distribution directly from SSA birth-registration files spanning 1880 to 1963.
- 637 total births
- 1880–1963 years on record
- 1920s peak decade
- 27% born in that decade
Data updated Jul 2026
The verdict
637 girls have been named Lillis since 1880, peaking in the 1920s, last recorded in 1963.
- 637
- total births
- 1880–1963
- years on record
- 1920s
- peak decade
- 27%
- born in that decade
1920s
Peak decade
27% of everyone ever named Lillis was born in this single decade.
1919
Single peak year
25 babies were named Lillis in 1919 - its busiest year on record.
Lillis's usage pattern, beyond the headline number
Divide Lillis's SSA record in two at 1924 and the more recent half accounts for 46% of all births, the earlier half the remaining 54%, a genuinely balanced usage pattern. Its calmest year was 1894, with only 5 births recorded -- set against the 1919 peak of 25, that's the full swing in one name's fortunes.
Lillis at a glance
Last recorded 1963Peak year
1919
Current rank
Unranked
Active since
1880
Lillis popularity over time
Annual U.S. births registered with the Social Security Administration · 1880–1963
- Peak year (1919)
- 25
- Annual births at peak, across 84 years of records
Lillis by decade
Total births in each ten-year window, peak vs trough at a glance
1920s was Lillis's strongest decade.
172 babies received the name during that ten-year window, about 27% of all-time use.
Lillis births by decade
Total births in each ten-year window
- 1880s 28
1880s
28 births
- 1890s 51
1890s
51 births
- 1900s 47
1900s
47 births
- 1910s
1910s
138 births
- 1920s
1920s
172 births
- 1930s
1930s
99 births
- 1940s 54
1940s
54 births
- 1950s 38
1950s
38 births
- 1960s 10
1960s
10 births
What this shows Peak: 1920s at 172 births (27% of all-time use).
How Lillis compares to similarly-sized names
Years in SSA records vs. share of all-time use concentrated in the single peak year, among 15 girls names closest to Lillis's total volume
Lillis vs 15 similarly-sized girls names
Frequently Asked Questions
How popular is the name Lillis? ▼
Since 1880, Social Security records show 637 babies named Lillis. The most recent recorded year was 1963. Its busiest year on record was 1919, with 25 births.
When was Lillis most popular? ▼
Lillis was most popular in the 1920s decade with 172 total births. The single peak year was 1919.
How long has the name Lillis been used? ▼
Lillis has been recorded in Social Security data since 1880, spanning 84 years of data through 1963.
What names are similar to Lillis? ▼
Names with a similar sound or spelling include Lillian, Lily, Lillie, Lila, and 4 more. These share a common prefix and are also used for girls.
What to do with Lillis's data
- Lillis's decade-level peak was the 1920s (172 total births); usage has since declined to 10 in the 1960s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- Weighing it against an alternative? Put two names side by side. Compare names
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Lillis
Nearby Names Like Lillis
Names with a similar sound, spelling, or feel to Lillis
Lillian Girl
#54 475,028 births
Lily Girl
#24 189,644 births
Lillie Girl
#682 158,918 births
Lila Girl
#206 76,493 births
Liliana Girl
#80 74,990 births
Compare Lillis side by side: Lillis vs Lillian Lillis vs Lily Lillis vs Lillie
Related Names
Names with a similar number of total births
Data Sources
Data as of July 2026. Source: U.S. Social Security Administration (SSA).
According to the Social Security Administration, this profile draws directly from the agency's public-use baby-name files (updated June 2026). See our methodology for the full extraction, aggregation, and privacy-suppression rules.
Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data, 1880–1963 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Lillis: Baby Name Since 1880 - 637 Births, Peak 1919." NameAlmanac. Accessed via https://namealmanac.com/name/lillis. Licensed CC BY-SA 4.0.
Name Almanac is rendered directly from the Social Security Administration's public baby-name files, no number is typed in by an editor. This profile for Lillis draws directly on SSA national and state-level files, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of July 2026.