The Illy surname
In the 2000 U.S. Census, 110 people carried this name — #139,757 among all U.S. surnames, about 1 in every 2,500,000 people counted.
In France’s civil register
France’s register of deaths holds 319 people named Illy.
6 of them were born outside France. Those born in France came from 22 départements, most often Hautes-Alpes.
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 Illy.
When the index is not enough
This page says where Illy 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.