The Guillet surname
In the 2010 U.S. Census, 568 people carried this name — #38,850 among all U.S. surnames, about 1 in every 526,300 people counted. That is up 6% from 537 in 2000.
In France’s civil register
France’s register of deaths holds 8,190 people named Guillet.
63 of them were born outside France. Those born in France came from 93 départements, most often Loire-Atlantique.
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
540 people named Guillet live in Switzerland.
They live in 13 of Switzerland’s 26 cantons, most of all in Fribourg.
Where it concentrates, on the mapWhere they live today
Swiss Federal Statistical Office (FSO), «Surnames of the permanent resident population by canton», 2025, opendata.swiss/en/dataset/nachnamen-der-standigen-wohnbevolkerung-nach-kanton3 · names with fewer than 3 bearers in a canton are not published.
In Argentina’s national register
At least 130 people named Guillet live in Argentina.
RENAPER only publishes a name in a province when more than ten people there share it, so the real number is higher. Most of them live in Buenos Aires Province.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they live today
RENAPER (National Registry of Persons, Argentina), surnames of residents by province, December 2021 — CC BY 4.0.
Who carried it
People named Guillet,
with a public archive behind them.
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Pernette Du Guillet 1520–1545 · writer -
Pernette Du Guillet 1520–1545 · writer
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Charles Guillet 1575–1654 · composer -
Paule Guillet d. 2009
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François Guillet 1600–1660
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Georges Guillet de Saint-George 1624–1705 · author
Wikidata and Wikimedia Commons (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Guillet.
- Guillaume 3,230 · U.S. census
- Guille 192 · U.S. census
- Guillemette 1,065 · U.S. census
- Guillemin 108 · U.S. census
- Guillen 30,153 · U.S. census
- Guillermo 3,393 · U.S. census
- Guilliot 109 · U.S. census
- Guillory 15,161 · U.S. census
- Guillot 4,457 · U.S. census
- Guillotte 992 · U.S. census
- Guillou 119 · U.S. census
- Guilmain 173 · U.S. census
When the index is not enough
This page says where Guillet 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.