Guilherme
Guilherme is a boy's name that peaked in 2006, when it was the 2,881st most popular in the United States. In 2025 it ranked 8,910th. About 510 Guilhermes are alive in the United States today, and half of them are over 18.
Popularity, 1880–2025
boys named Guilherme
By the numbers
- Total US births
- 522
- Estimated living today
- 510
- Median age today
- 18
- Peak year
- 2006
- Best rank
- 2,881st
- Rank in 2025
- 8,910th
- First recorded
- 1921
How old the living Guilhermes are
born that year still alive today
Of the 522 babies given the name since 1921, about 510 are alive — 97 in every hundred. The dotted line is the median: half were born before 2007 and half after.
An estimate, not a count. SSA births aged forward through SSA cohort life tables, which know nothing about who left the country or arrived in it — so for a name that mostly came to America rather than being born in it, this is a floor rather than a figure. Where you fall among living Americans.
Notable Guilhermes
- Guilherme Marinato (born 1985)Russian footballer
- Pedro Guilherme Abreu dos Santos (born 1997)Brazilian footballer
- Guilherme Arana (born 1997)Brazilian association football player
- Guilherme Siqueira (born 1986)Brazilian footballer
- Guilherme Santos (born 1988)Brazilian association football player
- Guilherme dos Santos Torres (born 1991)Brazilian footballer
- Guilherme Costa Marques (born 1991)footballer
- Guilherme Milhomem Gusmão (born 1988)Brazilian footballer
People named Guilherme with articles in the most Wikipedia languages. Data from Wikidata (CC0).
Where Guilherme is most common
Relative to how many babies each state records, Guilherme is most concentrated in Massachusetts (32.0×).
Total births recorded in each state since 1910. Browse names by state.
Names of 2006
The most popular boys’ names the year Guilherme peaked:
Guilherme elsewhere
| Country | Spelling | Births | Best rank |
|---|---|---|---|
| Portugal boys | Guilherme | 6,469 name registrations | 14th |
| France boys | Guilherme | 435 | 1,284th |
| Switzerland boys | Guilherme | 256 | 395th |
| England and Wales boys | Guilherme | 201 | 1,380th |
| Belgium boys | Guilherme | 15 | 872nd |
| Ireland boys | Guilherme | 8 | 529th |
Counts come from each country's own records and are not comparable with the US figures above, which cover different years and a different definition of a recorded name. Where a country writes the name several ways, the spellings are added together and the most common is shown. A row marked name registrations is counting something else: Portugal ranks each of a child's two given names separately, so a girl registered Maria Leonor is in both the Maria row and the Leonor row, and that figure is not a number of children.
Guilherme: births by region
| Region | Country | Spelling | Births | Share of the region | Best rank |
|---|---|---|---|---|---|
| German boys | Switzerland | Guilherme | 115 | 0.009% | 508th |
| French boys | Switzerland | Guilherme | 134 | 0.031% | 178th |
| Italian boys | Switzerland | Guilherme | 4 | 0.006% | 134th |
| Romansh boys | Switzerland | Guilherme | 3 | 0.081% | 14th |
Parts of a country counted above, not extra births. The share is what makes the regions comparable: they differ in size by a factor of three hundred.
By canton, Guilherme is most concentrated in Fribourg, where 0.04% of children were given it – 27 of them.
Guilherme: rank by region
In 2015, Guilherme was given 5 times or more in 1 region of Belgium.
| Region | Spelling | Place | Children |
|---|---|---|---|
| Flanders | Guilherme | 865 | 5 |
Each of these is the top of a list the statistics office cut off somewhere – Belgium below 5 children – and published nothing after. So a region missing here is one where the name fell outside what was published, not one where it went unused. Places are shared where names tie, and the further down a list a place is, the more names can share it.
Guilherme among the living
How many people each country's register counts under the name, rather than how many were given it in any one year. Each register was read on one date, and they are not the same date.
| Country | Spelling | First forename | Any forename |
|---|---|---|---|
| Finland boys | Guilherme | 6 | 10 |
A count of people on a register – Finland on 4 August 2026 – and not of births, so it cannot be compared with the figures above. Names with very few bearers are withheld, and a dash in the first-forename column means the register would not say rather than that nobody goes by it.
Where Guilherme lives in Spain
Not a count of births but of people: 731 men called Guilherme were living in Spain on 1 January 2025, of every age, born in any year. Where they live is not spread evenly.
Men: the provinces where it is densest
| Province | Spelling | People | Per thousand | Place there |
|---|---|---|---|---|
| Lugo | Guilherme | 11 | 0.070 | 768 |
| Pontevedra | Guilherme | 28 | 0.061 | 798 |
| Coruña, A | Guilherme | 32 | 0.059 | 866 |
| Balears, Illes | Guilherme | 34 | 0.055 | 1,115 |
| Barcelona | Guilherme | 153 | 0.052 | 1,089 |
| Burgos | Guilherme | 9 | 0.050 | 1,034 |
Listed in 29 of Spain's 52 provinces. In the other 23 it is either held by fewer than 5 people – the point below which the source withholds a name – or it fell past the 5,000 names the source will print for one province. Neither means nobody there is called it. The rate is the source's own, not a share worked out here.
Related names
Guilherme against another name
Two names on one chart, with the year one overtook the other.
Try it on yourself
Source: US Social Security Administration, national and state baby-name files, 1880–2025. Counts include only births registered with the SSA, and names with fewer than five births in a year are not published. The living estimate applies SSA cohort life tables to those births; it counts people born in the United States, so it misses anyone who arrived later and anyone who has left.