The Guilherme surname
In the 2010 U.S. Census, 155 people carried this name — #113,155 among all U.S. surnames, about 1 in every 2,000,000 people counted. That is up 18% from 131 in 2000.
In Switzerland’s population statistics
94 people named Guilherme live in Switzerland.
They live in 10 of Switzerland’s 26 cantons, most of all in Geneva.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they live today
Swiss Federal Statistical Office (FSO), «Surnames of the permanent resident population by canton», 2025, opendata.swiss · names with fewer than 3 bearers in a canton are not published.
In France’s civil register
France’s register of deaths holds 55 people named Guilherme.
24 of them were born outside France. Those born in France came from 11 départements, most often Sarthe.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they were born
Fichier des personnes décédées, INSEE — Licence Ouverte 2.0 · deaths recorded in France since 1970, by place of birth.
Nearby in the index
Surnames next to Guilherme.
- Guignard 401 · U.S. census
- Guijarro 981 · U.S. census
- Guilbault 904 · U.S. census
- Guilbeau 1,637 · U.S. census
- Guilbert 638 · U.S. census
- Guile 680 · U.S. census
- Guiliani 319 · U.S. census
- Guiliano 844 · U.S. census
- Guillard 204 · U.S. census
- Guillaume 3,230 · U.S. census
- Guille 192 · U.S. census
- Guillemette 1,065 · U.S. census
When the index is not enough
This page says where Guilherme is.
A volume says what happened to it.
Every page in the index is free and stays free. The Heritage Volume is the long form: the full paper trail, the arms, the crossing — bound, and yours.