Lyllian
Lyllian was given to 5 girls in 2025, #16,335 among girls’ names; 635 Americans have been recorded with it since 1923 (Social Security Administration, published May 2026).
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Lyllian by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Lyllian?
#16,335 among girls’ names, 2025
Lyllian fell from #4,809 in 2015 to #16,335 in 2025 among girls’ names; its share of girls born fell from 16.2 to 3.1 per million.
45 babies in 2009, the peak
Lyllian peaked in 2009, when 45 girls were given it, #3,595 among girls’ names. The 5 births of 2025 are 11% of that peak.
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2025 | 5 | #16,335 | 3.1 |
| 2023 | 7 | #12,923 | 4.4 |
| 2022 | 12 | #8,835 | 7.3 |
| 2021 | 12 | #8,765 | 7.3 |
| 2020 | 15 | #7,423 | 9.3 |
| 2019 | 17 | #6,911 | 10.1 |
| 2018 | 15 | #7,608 | 8.8 |
| 2017 | 18 | #6,700 | 10.4 |
| 2016 | 21 | #6,097 | 11.9 |
| 2015 | 29 | #4,809 | 16.2 |
Every recorded year (30)
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2014 | 44 | #3,563 | 24.6 |
| 2013 | 41 | #3,752 | 23.4 |
| 2012 | 40 | #3,884 | 22.7 |
| 2011 | 41 | #3,764 | 23.3 |
| 2010 | 38 | #4,001 | 21.4 |
| 2009 | 45 | #3,595 | 24.5 |
| 2008 | 38 | #4,142 | 20.1 |
| 2007 | 29 | #5,041 | 15.1 |
| 2006 | 33 | #4,421 | 17.4 |
| 2005 | 23 | #5,535 | 12.4 |
| 2004 | 33 | #4,235 | 18.0 |
| 2003 | 20 | #5,948 | 10.9 |
| 2002 | 11 | #9,220 | 6.1 |
| 2001 | 15 | #7,178 | 8.3 |
| 2000 | 5 | #16,524 | 2.8 |
| 1999 | 6 | #13,688 | 3.4 |
| 1998 | 5 | #15,546 | 2.8 |
| 1997 | 5 | #15,130 | 2.9 |
| 1926 | 7 | #4,117 | 5.9 |
| 1923 | 5 | #5,404 | 4.1 |
Ranks and shares: girls’ names in each year’s SSA file; share of all girls SSA recorded that year.
Is Lyllian a boy’s or a girl’s name?
Lyllian has been recorded only for girls: SSA lists no boys with the name in 30 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Lyllian: the SSA national file counts each sex separately.
How many people are named Lyllian, and how old are they?
An estimated 618 Americans named Lyllian and born in the U.S. are alive in 2026 (97% of everyone recorded); the median is 15 years old and half are between 12 and 19. An estimate from SSA’s births and life tables, not a count.
The 2020 Census counted 511 people named Lyllian (511 women and girls, 0 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 573 born in the U.S. The Census count is 11% below that prediction. Possible reasons: people who give a short form or another name to the Census, and a survival estimate that can run high.
Living estimate: SSA births carried forward with the survival rates in SSA’s cohort life tables (2024 Trustees Report) for each birth year and sex. How the estimate is made. Count: Census Bureau, first names in the 2020 Census (released April 14, 2026; names reported 100 or more times, with the Bureau’s disclosure-avoidance adjustment).
How common is the spelling Lyllian?
Lyllian is a less common spelling of Lillian: SSA has recorded 635 Lyllian and 476,457 Lillian since 1880.
Of these 8 names spelled alike, given to 502,300 babies since 1880, Lyllian is the fifth most given (<1% of them). In 2025 it was given to 5 of their 4,572 babies (<1%), the seventh most given that year.
Spelled alike: names in the SSA national file with the same pattern of letters and sounds and at most two letters apart, and Wiktionary’s listed forms; births since 1880 and in 2025, and each name’s peak year, from the SSA national file, published May 8, 2026. Some are separate names, not spellings of one.
Names that rose and fell in the same decades as Lyllian
Names whose births rose and fell across the same decades, measured on each decade’s share of births.
Similar histories: each decade’s share of births, from the SSA national file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
More about Lyllian and names like it
- Compare Lyllian and LillianBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2000sLyllian peaked in 2009.
- Indiana’s most given namesThe state where SSA recorded the most babies named Lyllian since 1910.
- The top names of 2009The year the most babies were named Lyllian.
- The names of Generation ZMost people named Lyllian alive today were born 1997-2012.
- Names starting with LMost given first.