Jyllian
A feminine variant of the name Gillian, derived from the French form of William.
Name Census estimates that about 239 living Americans carry the first name Jyllian. The name is used almost exclusively for girls. The average person named Jyllian today is around 24 years old, and the year with the single highest number of Jyllian births was 2001 (23 babies).
This page is the full Name Census profile for Jyllian. Below you will find a gender breakdown showing how the name splits between male and female registrations, a year-by-year popularity chart stretching back to 1880, decade-level totals, the top US states for this name, its meaning and etymology, and a set of frequently asked questions with data-backed answers.
People living today
239
~ 1 in 1,434,119 Americans
Peak year
2001
23 babies that year
Average age
24
years old
2012 SSA rank
#18,122
Tracked since 1981
Census
Jyllian in the 2020 Census
The 2020 Census recorded 262 people with the first name Jyllian, which placed it at #32,242 in the published first-name tables. This is a snapshot of people who already had the name at the time of the Census.
The SSA sections elsewhere on this page answer a different question: how often parents gave the name to babies over time. The "people living today" figure on this page is different again: it is a current estimate built from SSA birth records and age-based survival rates, so the two numbers are not expected to match exactly.
2020 Census rank
#32,242
National first-name rank
People counted
262
262 in the published race/origin table
Per 100,000
0.1
People with this name in 2020
Largest reported group
White
68.3% of people with this name
Demographics
Ancestry and ethnicity for Jyllian
In the 2020 Census race and Hispanic-origin table, the largest reported group for people named Jyllian is White at 68.3%. The next largest groups are Hispanic (12.2%) and Black (9.9%). These figures describe the people who had the name in 2020, not any inherent property of the name itself.
The bar chart below shows how people with the first name Jyllian described their own race and ethnicity on the 2020 Census form. The Census Bureau groups responses into six broad categories: White, Black or African American, Hispanic or Latino, Asian and Pacific Islander, American Indian and Alaska Native, and Two or More Races. When a category has too few respondents for a given name, the Bureau suppresses the figure to protect individual privacy, which is why some names show fewer than six slices.
Percentages are shown so the breakdown is easy to read across every published category. Because the 2020 Census first-name file also includes raw headcounts for each group, Name Census can show those alongside the percentages in the legend and hover tooltip.
Keep in mind that these are self-reported numbers. A first name does not determine a person's race or ethnicity, and the distribution you see here reflects the specific population who happened to carry the name Jyllian at the time of the 2020 Census, not any inherent property of the name itself.
- White68.3% · 179
- Hispanic or Latino12.2% · 32
- Black or African American9.9% · 26
- Two or more races6.1% · 16
- American Indian and Alaska Native1.9% · 5
- Asian and Pacific Islander1.5% · 4
Popularity
Jyllian: popularity over time
The SSA tracks Jyllian from the 1980s through to the 2010s, spanning 4 decades of birth certificate data. The biggest single decade for the name was the 2000s, with 154 total registrations. Usage has dropped considerably from its 2000s peak. The most recent decade brought in only a fraction of the registrations that the name once attracted.
Babies born per year
Decades
Jyllian by decade
The table below breaks the full SSA timeline into ten-year windows. Each row shows how many male and female babies were given the name Jyllian during that decade, along with a combined total. This is useful for spotting eras where the name surged or retreated.
Origin
Meaning and history of Jyllian
The given name Jyllian has its origins in the Germanic languages, tracing back to the Middle Ages. It is believed to be a variant of the name Julian, which itself is derived from the Roman family name Iulius. The name Julian was borne by several early Roman emperors, including the infamous Julio-Claudian dynasty.
One of the earliest recorded instances of the name Jyllian dates back to the 12th century, where it appeared in various medieval records and chronicles from regions such as Germany, France, and England. During this period, the name was often spelled as "Jylliane" or "Jyllienne," reflecting the linguistic influences of the time.
Although the name Jyllian does not have a direct connection to ancient texts or religious scriptures, its root name Julian has been associated with several notable figures throughout history. One of the most famous bearers of the name Julian was Julian the Apostate, a Roman emperor who reigned from 361 to 363 AD and attempted to revive traditional Roman religion during the Christian era.
In the 14th century, Jyllian de Burgh (1286-1335) was a prominent English noblewoman and the wife of John de Warenne, Earl of Surrey. Her name appears in various historical records and documents from that period.
During the Renaissance, Jyllian Holles (1516-1580) was an English courtier and a member of the household of Queen Elizabeth I. She served as a lady-in-waiting to the Queen and was known for her intelligence and wit.
In the 17th century, Jyllian van der Meer (1628-1688) was a Dutch Golden Age painter renowned for her exquisite still-life paintings. Her works can be found in prestigious art collections around the world.
Another notable bearer of the name was Jyllian de Valois (1738-1792), a French aristocrat and courtier who lived during the turbulent times of the French Revolution. She was known for her elegance and sophistication, but her life was cut short during the Reign of Terror.
Throughout history, the name Jyllian has been borne by various other individuals, each leaving their mark in their respective fields and contributing to the rich tapestry of the name's legacy.
People
Jyllian + last name combinations
How many people share a full name with Jyllian as the first name? Click a combination below to see the estimate, or search any pairing.
Related
Other names starting with J
Other first names starting with J with a similar number of bearers.
FAQ
Jyllian: questions and answers
How many people in the U.S. are named Jyllian?
Name Census puts the figure at roughly 239 living Americans. We arrive at this by taking every SSA birth registration for Jyllian going back to 1880 and adjusting each cohort for expected survival using CDC actuarial life tables. The result is an age-weighted living-bearer count, not a raw birth total. That works out to about 1 in 1,434,119 US residents.
Is Jyllian a common name?
We classify Jyllian as "Very Rare". It ranks above 76.5% of all first names in the SSA dataset by living bearers. Across the full history of the data, 244 babies have been registered with this name.
When was Jyllian most popular?
The single biggest year for Jyllian was 2001, when 23 babies received the name. The fact that the average living Jyllian is about 24 years old gives you a rough sense of which era contributed the most bearers who are still alive today.
How common was Jyllian in the 2020 Census?
The published 2020 Census first-name tables recorded 262 people with the name Jyllian, or 0.09 per 100,000 residents. That placed it at #32,242 in the national Census ranking for first names.
Why is the Census count different from the living estimate?
Because they measure different things. The Census figure is a count of people who had the name Jyllian in 2020. The living estimate aims to answer a current question instead: how many people with the name are alive today, based on SSA birth records and age-based survival rates. Since one number is a 2020 snapshot and the other is a present-day estimate, they are not expected to be identical.
What does the Census say about the gender split for Jyllian?
In the 2020 Census sex table, Jyllian appears almost entirely female. Of the 261 people counted with this name, 100.0% were female and only a very small share were male. The Census view is a snapshot of people living with the name in 2020, while the SSA section above tracks births across time.
What does the Census say about the background of people named Jyllian?
In the 2020 Census race and Hispanic-origin table, the largest reported group for people named Jyllian is White at 68.3%. The next largest groups are Hispanic (12.2%) and Black (9.9%). These figures describe the people who had the name in 2020, not any inherent property of the name itself. The percentages in the chart above come from self-reported race and Hispanic-origin responses in the 2020 Census.
Which group reports the name Jyllian most often in the Census?
White is the largest reported group for people named Jyllian in the 2020 Census, accounting for 68.3% (179 people in the published table).
Why can the Census sex total and race total differ slightly?
The Census Bureau published separate 2020 tables for sex and for race/Hispanic origin, and the released figures can differ slightly because of privacy protection in the public files. That is why this page treats the gender section and the race/origin section as two related snapshots instead of forcing them into one identical total.
Does every first name have Census demographic data?
No. The public Census first-name release only includes names that met the Bureau's publication rules, so many rarer names in the SSA files have no Census demographic snapshot. When that happens, the SSA trend, gender history, and state sections still appear, but the 2020 Census demographic sections are omitted.
What does the SSA popularity chart show?
The chart tracks births, not the number of people alive with the name today. Each point shows how many babies were given the name Jyllian in that year. That makes it useful for spotting when the name rose, peaked, or faded.
Is Jyllian a female name?
Yes, 100.0% of people registered as Jyllian in the SSA data are female. You can see the full per-sex comparison in the gender distribution section above, which includes the latest year rank, birth count, and peak year for each sex.
Is Jyllian still being used today?
Yes. The SSA still recorded Jyllian in 2024, and the page above shows its latest-year rank where available. A name can be well past its peak and still remain in steady use, especially if it built up a large population over earlier decades.
Why can a name have a lot of living bearers even if it is not trendy now?
Because living-bearer counts and current baby-name popularity measure different things. A name like Jyllian can build up a very large population over many decades, even if fewer parents are choosing it now than they did at its peak.
Where does this data come from?
First-name figures come from the Social Security Administration's national baby name files, which cover every name on a birth certificate from 1880 to 2024. Living-bearer estimates layer in CDC actuarial life tables broken out by sex to account for mortality. The population baseline (342,754,338) is the Census Bureau's latest national estimate. You can read the full calculation on our methodology page.
How common is the name Jyllian?
For a quick modern take, check how many people share the name Jyllian on our sister site HowManyOfMe.org.