The Guilmain surname
In the 2000 U.S. Census, 163 people carried this name — #102,173 among all U.S. surnames, about 1 in every 1,666,700 people counted.
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In France’s civil register
France’s register of deaths holds 440 people named Guilmain.
4 of them were born outside France. Those born in France came from 35 départements, most often Pas-de-Calais.
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 Belgium’s population register
At least 23 people named Guilmain live in Belgium.
Statbel only publishes a name in a municipality when five or more people there share it, so the real number is higher. Most of them live in Namur.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they live today
Statbel (Statistics Belgium), family names of the population by municipality, 1 January 2026 — CC BY 4.0.
Nearby in the index
Surnames next to Guilmain.
- 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
- Guilmet 176 · U.S. census
- Guimaraes 832 · U.S. census
- Guimond 1,805 · U.S. census
- Guimont 440 · U.S. census
- Guin 2,635 · U.S. census
- Guinard 329 · U.S. census
When the index is not enough
This page says where Guilmain 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.