Total births
522
Boys' name · since 1921
Guilherme
Guilherme has 522 recorded births since 1921 in federal Social Security data, most heavily in 2006 -- full year-by-year trend, decade aggregates, and state rankings follow.
- #12526
- among boys today
- 522
- born since 1921
- 2000s
- peak decade
- 12%
- more common than other boys
522 babies have been named Guilherme since 1921, making it today's #12526 boys' name.
According to the U.S. Social Security Administration, Guilherme has been recorded 522 times among boys since 1921, currently ranked #12526 nationally and more common than 12% of boys, with its heaviest use in the 2000s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 1921 to 2025.
- #12526 among boys today
- 522 born since 1921
- 2000s peak decade
- 12% more common than other boys
Data updated Jun 2026
The verdict
Guilherme is currently the #12526 boys' name in America, more common than 12% of boys - 522 born since 1921, peaking in the 2000s.
- #12526
- among boys today
- 522
- born since 1921
- 2000s
- peak decade
- 12%
- more common than other boys
Guilherme vs. every other boys name in current SSA rankings
#12526
of 14,294 boys in use
More common than 12% of names given to boys today.
2000s
Peak decade
49% of everyone ever named Guilherme was born in this single decade.
2006
Single peak year
39 babies were named Guilherme in 2006 - its busiest year on record.
How Guilherme compares
522 Top 43% higher than 57% of 14,294 names currently given to boys
Based on all-time total births among currently-ranked boys names. Names with fewer occurrences are grouped into wider buckets on the right.
Source U.S. Social Security Administration, national baby name data
How the numbers stack up
Guilherme's all-time total is 42% above the median boys name, and Liam still leads by a wide margin.
| Metric | Guilherme | Median boys name (Elchonon) | #1 boys name (Liam) |
|---|---|---|---|
| All-time total births | 522 | 367 | 358,536 |
| Peak-year births | 39 | 23 | 22,252 |
Guilherme's usage pattern, beyond the headline number
Splitting Guilherme's full recorded timeline at 2007, 55% of its total births fall in the more recent half of the record versus 45% in the earlier half -- a fairly even split across the full record. Its quietest year on record was 1995, with just 5 recorded births -- worth weighing against the 2006 peak of 39 to see the full range of the name's swing in popularity.
Guilherme at a glance
Outside the top 1,000Peak year
2006
Current rank
#12,526
Active since
1921
Guilherme popularity over time
Annual U.S. births registered with the Social Security Administration · 1921–2025
- Peak year (2006)
- 39
- Annual births at peak, across 105 years of records
Guilherme by decade
Total births in each ten-year window, peak vs trough at a glance
2000s was Guilherme's strongest decade.
257 babies received the name during that ten-year window, about 49% of all-time use.
Guilherme births by decade
Total births in each ten-year window
- 1920s 6
1920s
6 births
- 1980s 6
1980s
6 births
- 1990s 63
1990s
63 births
- 2000s
2000s
257 births
- 2010s
2010s
149 births
- 2020s 41
2020s
41 births
What this shows Peak: 2000s at 257 births (49% of all-time use).
How Guilherme compares to similarly-sized names
Years in SSA records vs. share of all-time use concentrated in the single peak year, among 15 boys names closest to Guilherme's total volume
Guilherme vs 15 similarly-sized boys names
Guilherme by state
Where Guilherme concentrates geographically, total births since 1921
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | Massachusetts | | 157 | 30.1% |
| #2 | New Jersey | | 16 | 3.1% |
| #3 | Connecticut | | 15 | 2.9% |
| #4 | Florida | | 10 | 1.9% |
Massachusetts share of Guilherme's total US births 30.1%
Even split
157 of 522 births nationwide. Compared to a flat distribution across 4 reporting states.
Frequently Asked Questions
How popular is the name Guilherme? ▼
Since 1921, Social Security records show 522 babies named Guilherme. Today it holds rank #12526 among boys. Its busiest year on record was 2006, with 39 births.
When was Guilherme most popular? ▼
Guilherme was most popular in the 2000s decade with 257 total births. The single peak year was 2006.
Where is Guilherme most popular? ▼
The top states for the name Guilherme are Massachusetts (157 births), New Jersey (16 births), Connecticut (15 births).
How long has the name Guilherme been used? ▼
Records for Guilherme go back to 1921, giving 105 years of history through 2025.
What names are similar to Guilherme? ▼
Names with a similar sound or spelling include Guillermo, Guido, Guilford, Guiseppe, and 4 more. These share a common prefix and are also used for boys.
What to do with Guilherme's data
- Guilherme's decade-level peak was the 2000s (257 total births); usage has since declined to 41 in the 2020s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- Massachusetts records the most Guilhermes (157 births) -- see the full state breakdown if geography matters to your decision. Massachusetts names
- Weighing it against an alternative? Put two names side by side. Compare names
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Guilherme
Nearby Names Like Guilherme
Names with a similar sound, spelling, or feel to Guilherme
Guillermo Boy
#831 32,074 births
Guido Boy
#10993 3,352 births
Guilford Boy
589 births
Guiseppe Boy
575 births
Guillaume Boy
#11162 342 births
Compare Guilherme side by side: Guilherme vs Guillermo Guilherme vs Guido Guilherme vs Guilford
Related Names
Names with a similar popularity rank to Guilherme
Data Sources
Data as of June 2026. Source: U.S. Social Security Administration (SSA).
According to the Social Security Administration, this profile draws directly from the agency's public-use baby-name files (updated June 2026). See our methodology for the full extraction, aggregation, and privacy-suppression rules.
Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data, 1921–2025 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Guilherme: #12526 Boys' Name - 522 Births, Peak 2006." NameAlmanac. Accessed via https://namealmanac.com/name/guilherme. Licensed CC BY-SA 4.0.
Name Almanac is rendered directly from the Social Security Administration's public baby-name files, no number is typed in by an editor. This profile for Guilherme draws directly on SSA national and state-level files, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.