The Gillis surname
In the 2000 U.S. Census, 18,438 people carried this name — #1,786 among all U.S. surnames, about 1 in every 14,600 people counted.
In Belgium’s population register
At least 1,619 people named Gillis 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 East Flanders.
Where it concentrates, on the mapWhere they live today
Statbel (Statistics Belgium), family names of the population by municipality, 1 January 2026 — CC BY 4.0.
In France’s civil register
France’s register of deaths holds 230 people named Gillis.
29 of them were born outside France. Those born in France came from 28 départements, most often Nord.
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.
Nearby in the index
Surnames next to Gillis.
- Gilli 169 · U.S. census
- Gilliard 3,461 · U.S. census
- Gillig 542 · U.S. census
- Gillin 1,259 · U.S. census
- Gillio 205 · U.S. census
- Gillion 488 · U.S. census
- Gillmann 111 · U.S. census
- Gillo 167 · U.S. census
- Gillon 1,324 · U.S. census
- Gillot 115 · U.S. census
- Gillotte 248 · U.S. census
- Gilly 666 · U.S. census
When the index is not enough
This page says where Gillis 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.