How Many People Are Named Gillian?
Complete statistics for the name Gillian: rarity score, gender breakdown, age distribution, historical popularity, worldwide data, meaning and origin.
Gillian, a very rare female name, is held by just 15,635 people in the US, making up 1 in 21,107 Americans. The majority of those named Gillian are under 30, giving it a decidedly modern vibe.
📖 Meaning & Origin
Traditionally, life-path number 1 represents leadership and independence.
🌍 Worldwide Usage
⚥ Gender Distribution
📊 Births by Age Group
Avg Cohort Age: 32All 16,079 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: 1999Annual US births from SSA records · Trend: Declining
🏆 Name Scorecard
Scores 0–100 based on statistical analysis of US and worldwide name frequency
📜 Gillian Through the Generations
Gillian peaked in popularity in 1999 with 1,030 births, reflecting its status as a relatively new generation name. Today, the average age of someone named Gillian is 32, with 9,613 under 30, 5,739 between 30 and 60, and only 727 over 60. This trend shows a decline since its peak, yet it remains a fresh choice for parents looking for something unique.
📍 State Distribution (Top 10)
🌿 Related Names by Origin
Other names sharing Gillian's Medieval English roots
📄 About the Name Gillian
How Many People Have the Name Gillian?
Based on Social Security Administration birth records and age-adjusted survival modeling, approximately 1,449 people in the United States currently share the name Gillian. That works out to roughly 1 in every 228,743 Americans, placing it in the Very Rare category.
Is Gillian a Common or Rare Name?
Gillian is classified as Very 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 Gillian Mean?
Gillian means "Derived from Gillian, a medieval form of Julian" and comes from Medieval English origins. The name carries a life-path numerology number of 1.
Gender Breakdown
Of all recorded bearers of Gillian in SSA data, approximately 0% are male and 100% are female.
When Was Gillian Most Popular?
The name Gillian reached peak popularity in 1999, with 1,030 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 Gillian?
Approximately 1,449 people named Gillian live in the United States today. All-time US births on record total 1,449. That works out to roughly 1 in 228,743 Americans.
Is Gillian a rare name?
Gillian is classified as Very Rare in the United States. Approximately 1 in every 228,743 Americans has this name.
What does the name Gillian mean?
Gillian means "Derived from Gillian, a medieval form of Julian" and comes from Medieval English origins.
Is Gillian more male or female?
Based on SSA records, 0% of people named Gillian are male and 100% are female.
When was Gillian most popular?
Gillian peaked in 1999 with 1,030 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.