The Guillermo surname
In the 2000 U.S. Census, 2,469 people carried this name — #11,647 among all U.S. surnames, about 1 in every 108,700 people counted.
Free to read. No account, no sign-up.
In France’s civil register
France’s register of deaths holds 192 people named Guillermo.
12 of them were born outside France. Those born in France came from 27 départements, most often Morbihan.
Where it concentrates, on the mapWhere they were born
Fichier des personnes décédées, INSEE — Licence Ouverte 2.0 · deaths recorded in France since 1970, by place of birth.
In Switzerland’s population statistics
21 people named Guillermo live in Switzerland.
They live in 4 of Switzerland’s 26 cantons, most of all in Bern.
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.
Nearby in the index
Surnames next to Guillermo.
- Guillard 229 · U.S. census
- Guillaume 2,451 · U.S. census
- Guille 189 · U.S. census
- Guillemette 978 · U.S. census
- Guillemin 108 · U.S. census
- Guillen 21,257 · U.S. census
- Guillet 537 · U.S. census
- Guilliot 116 · U.S. census
- Guillory 14,351 · U.S. census
- Guillot 4,371 · U.S. census
- Guillotte 1,020 · U.S. census
- Guillou 105 · U.S. census
When the index is not enough
This page says where Guillermo 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.