How Many People Are Named Jillian?
Complete statistics for the name Jillian: rarity score, gender breakdown, age distribution, historical popularity, worldwide data, meaning and origin.
Jillian is an English name rooted in the Latin Juliana, meaning youthful or devoted to Jupiter, and it belongs to roughly 81,611 people living in the US today. That works out to about 1 in 4,044 Americans, making it a genuinely rare name to come across. Its peak back in 1982 gave it a strong generation of bearers, but it's been quietly fading ever since.
📖 Meaning & Origin
Life path number 4 is traditionally linked to stability, practicality, and building solid foundations. People associated with 4 are seen as dependable and hardworking, with a strong sense of order and purpose.
🌍 Worldwide Usage
⚥ Gender Distribution
📊 Births by Age Group
Avg Cohort Age: 31All 83,245 recorded US births for this name, grouped by the age those individuals would be today. Not adjusted for survival, so the number living today is lower (see the living estimate above).
📈 Popularity Over Time
Peak: 1982Annual US births from SSA records · Trend: Declining
🏆 Name Scorecard
Scores 0–100 based on statistical analysis of US and worldwide name frequency
📜 Jillian Through the Generations
Jillian tells a pretty clear generational story. It took off in the late 1970s and early 1980s, hitting its high point in 1982 with 3,070 births in a single year. After that it declined steadily, which is why the numbers look the way they do today. Of the 81,611 Jillians alive in the US, the biggest group, 44,079, sits in the 30 to 60 age range, which lines up neatly with that 1980s peak. The average age of 31 reflects that weight. What's a little surprising is that 38,911 are under 30, nearly 47% of all living Jillians, meaning the name kept getting chosen well into the 1990s and 2000s even as it slowed down. Only 255 are over 60, which tells you this name barely existed before the 1970s. The gap between all-time births and living population is tiny, confirming Jillian is almost entirely a modern name with a short but real history.
📍 State Distribution (Top 10)
🌿 Related Names by Origin
Other names sharing Jillian's Latin roots
📄 About the Name Jillian
How Many People Have the Name Jillian?
Based on Social Security Administration birth records and age-adjusted survival modeling, approximately 81,611 people in the United States currently share the name Jillian. That works out to roughly 1 in every 4,044 Americans, placing it in the Rare category.
Is Jillian a Common or Rare Name?
Jillian is classified as Rare. The rarity scale runs from Very Common (shared by millions) through Common, Uncommon, Rare, and Very Rare. Understanding where a name sits helps parents gauge uniqueness, genealogists narrow down records, and individuals settle debates about their own name's distinctiveness.
What Does the Name Jillian Mean?
Jillian means "Youthful, devoted to Jupiter" and comes from Latin origins. The name carries a life-path numerology number of 4.
Gender Breakdown
Of all recorded bearers of Jillian in SSA data, approximately 0% are male and 100% are female.
When Was Jillian Most Popular?
The name Jillian reached peak popularity in 1982, with 3,070 babies registered that year. Current trend: Declining.
How Is This Data Calculated?
All figures are statistical estimates, not exact government headcounts. The underlying data comes from the SSA National Baby Names dataset. Full methodology is explained on the methodology page.
❓ Frequently Asked Questions
How many people are named Jillian?
Approximately 81,611 people named Jillian live in the United States today. All-time US births on record total 83,245. That works out to roughly 1 in 4,044 Americans.
Is Jillian a rare name?
Jillian is classified as Rare in the United States. Approximately 1 in every 4,044 Americans has this name.
What does the name Jillian mean?
Jillian means "Youthful, devoted to Jupiter" and comes from Latin origins.
Is Jillian more male or female?
Based on SSA records, 0% of people named Jillian are male and 100% are female.
When was Jillian most popular?
Jillian peaked in 1982 with 3,070 births that year. Current trend: Declining.
How accurate are these statistics?
All figures are statistical estimates based on SSA birth records and age-adjusted modeling. See the methodology page for full details.