Baby Name Popularity Profile

Guillermo

Data-driven SSA statistics, rankings, and historical trends for Guillermo.

✦ Resolute protector 🌍 Spanish, German traditional royal
National Rank (2025) #902
All-Time Peak Rank #352 Achieved 1996
Total U.S. Births 32,074 since 1880
Unisex Distribution 99.9% Boy / 0.1% Girl Male Archetype
First Recorded 1885 Last seen: 2025
Peak Decade 1990s 693 births in 1998
💡 The Guillermo Vibe: Considered a Declining Classic. A previously dominant name currently experiencing a prolonged generational cooling period.

🌍 Meaning & Etymology

Primary Meaning Resolute protector
Language Origin Spanish, German
Origin Type multiple
Spanish form of the Germanic name William, derived from the elements 'wil' (will, desire) and 'helm' (helmet, protection).
Common Nicknames
Memo Guille
Pronunciation: gee-YER-mo
Themes & Categories
traditional royal
Etymology confidence: High

📖 The Story Behind Guillermo

According to SSA data, Guillermo achieved its highest historical rank of #352 in 1996. Its highest annual registration volume occurred in 1998 with 693 babies. Between 2015 and 2025, modern registrations have decreased by 32.1%. Overall, the name has maintained a ranked presence for 119 consecutive years.

📊 Factual Timeline & Current Trajectory (1880 – 2025)

Registration footprint of Guillermo across 145 years of SSA data.

5-Year Trajectory Stable
10-Year Shift -32.1% Decline
18801920196020002025

📈 Popularity Milestones & Volatility

Busiest Year on Record 693 births in 1998
Years in Top 100 0 yrs
Years in Top 500 42 yrs
Registry Streak 119 yrs
Historical Volatility Highly Volatile
Largest 1-Year Jump N/A
Decade-by-Decade Registration Volumes
1880s: 5
1890s: 13
1900s: 44
1910s: 253
1920s: 821
1930s: 783
1940s: 943
1950s: 1,495
1960s: 2,107
1970s: 3,357
1980s: 4,363
1990s: 6,462
2000s: 6,095
2010s: 3,615
2020s: 1,718

📐 Sound & Spelling Structure

Phonetic Syllables Gui-le-rmo
Letter Count 9 letters
Spelling Complexity Complex
Length Percentile Longer than 92.2% of names
Linguistic Profile: Longer than 92.2% of SSA names. Starts with G, a letter used by only 2.3% of SSA names.

🛠️ Sibling & Surname Cadence Tool

Enter a surname or sibling name to test how it pairs with Guillermo.

📍 Authentic State & Regional Rankings

Highest Ranking State Arizona
Top States Arizona, Texas, California, New Mexico, Nevada
States with Data 35
State 2025 Rank Total Births Peak Year 5-Yr Velocity
Arizona #436 1,516 2003 Insufficient historical volume
Texas #521 8,913 1998 26.4% Decline
California #511 11,089 1992 21.1% Decline
New Mexico Unranked 448 1984 Insufficient historical volume
Nevada #539 202 2001 Insufficient historical volume
Florida #1147 1,422 1991 Insufficient historical volume
Illinois #892 1,334 2005 Insufficient historical volume
Colorado #797 303 2002 Insufficient historical volume
New York #1344 1,503 1970 Insufficient historical volume
Washington #657 299 1999 Insufficient historical volume
New Jersey Unranked 476 1985 Insufficient historical volume
Oregon Unranked 131 2010 Insufficient historical volume
Georgia #1415 302 2004 Insufficient historical volume
North Carolina #1190 243 2002 Insufficient historical volume
Utah Unranked 65 2006 Insufficient historical volume
Kansas Unranked 61 2008 Insufficient historical volume
Oklahoma Unranked 78 2007 Insufficient historical volume
Virginia Unranked 106 2003 Insufficient historical volume
Wisconsin Unranked 67 2008 Insufficient historical volume
Connecticut Unranked 31 1991 Insufficient historical volume
Indiana Unranked 50 2005 Insufficient historical volume
Michigan Unranked 79 2005 Insufficient historical volume
Maryland Unranked 28 2009 Insufficient historical volume
Massachusetts Unranked 44 1983 Insufficient historical volume
Tennessee Unranked 38 2004 Insufficient historical volume
Nebraska Unranked 11 2009 Insufficient historical volume
Arkansas Unranked 15 2001 Insufficient historical volume
South Carolina Unranked 19 2007 Insufficient historical volume
Idaho Unranked 5 2002 Insufficient historical volume
Pennsylvania Unranked 60 2002 Insufficient historical volume
Minnesota #742 16 2025 Insufficient historical volume
Iowa Unranked 5 2007 Insufficient historical volume
Missouri Unranked 7 2004 Insufficient historical volume
Alabama Unranked 5 2024 Insufficient historical volume
Ohio Unranked 10 2001 Insufficient historical volume

👨‍👩‍👧 Sibling Name Suggestions

👦 Brother Suggestions
Alberto Alfredo Darian Mitchell Quentin Quinton Dillon Mathew Conor Ramon
👧 Sister Suggestions
Michaela Rebekah Celina Chandler Cheyenne Chelsea Kelsey Hunter Leanna Megan

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