How Many People Are Named Guillermo?
Complete statistics for the name Guillermo: rarity score, gender breakdown, age distribution, historical popularity, worldwide data, meaning and origin.
Guillermo is the Spanish form of William, meaning 'resolute protector,' and it's a genuinely distinctive choice in the US today. About 27,874 people carry the name right now, making it quite rare at 1 in 11,839 Americans. What's striking is how concentrated its popularity was, peaking in 1998 with 693 births and then steadily pulling back from there.
📖 Meaning & Origin
Life path number 4 is traditionally associated with stability, discipline, and building solid foundations. People connected to the number 4 are seen as practical and dependable, the kind who get things done through hard work rather than luck.
🌍 Worldwide Usage
⚥ Gender Distribution
📊 Births by Age Group
Avg Cohort Age: 39All 31,881 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: 1998Annual US births from SSA records · Trend: Declining
🏆 Name Scorecard
Scores 0–100 based on statistical analysis of US and worldwide name frequency
📜 Guillermo Through the Generations
Guillermo tells a pretty clear generational story. It built momentum through the 1980s and 90s, hitting its high point in 1998 with 693 births, likely riding a wave of growing Latino cultural presence in the US. Since then it's been on a consistent decline, so the name feels like it belongs to a specific era even though it reads as modern. The age distribution backs this up: 13,155 people named Guillermo are under 30, and 13,234 are in the 30-60 bracket, meaning the bulk of the name's population sits squarely in those peak-era birth years. Only 5,492 are over 60, which confirms this isn't an old-school inherited name with deep historical roots in the US. The gap between all-time births of 31,881 and the estimated 27,874 living today is relatively small, reinforcing that most people who ever received this name are still around. It's rare, it's modern, and it belongs to a pretty specific window of American history.
📍 State Distribution (Top 10)
🌿 Related Names by Origin
Other names sharing Guillermo's Spanish roots
📄 About the Name Guillermo
How Many People Have the Name Guillermo?
Based on Social Security Administration birth records and age-adjusted survival modeling, approximately 3,579 people in the United States currently share the name Guillermo. That works out to roughly 1 in every 92,609 Americans, placing it in the Rare category.
Is Guillermo a Common or Rare Name?
Guillermo 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 Guillermo Mean?
Guillermo means "resolute protector" and comes from Spanish origins. The name carries a life-path numerology number of 4.
Gender Breakdown
Of all recorded bearers of Guillermo in SSA data, approximately 100% are male and 0% are female.
When Was Guillermo Most Popular?
The name Guillermo reached peak popularity in 1998, with 693 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 Guillermo?
Approximately 3,579 people named Guillermo live in the United States today. All-time US births on record total 3,579. That works out to roughly 1 in 92,609 Americans.
Is Guillermo a rare name?
Guillermo is classified as Rare in the United States. Approximately 1 in every 92,609 Americans has this name.
What does the name Guillermo mean?
Guillermo means "resolute protector" and comes from Spanish origins.
Is Guillermo more male or female?
Based on SSA records, 100% of people named Guillermo are male and 0% are female.
When was Guillermo most popular?
Guillermo peaked in 1998 with 693 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.