The Rui surname
In the 2000 U.S. Census, 129 people carried this name — #123,314 among all U.S. surnames, about 1 in every 2,000,000 people counted.
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In France’s civil register
France’s register of deaths holds 116 people named Rui.
44 of them were born outside France. Those born in France came from 17 départements, most often Bas-Rhin.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where 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
68 people named Rui live in Switzerland.
They live in 8 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 Rui.
- Ruggeri 1,851 · U.S. census
- Ruggieri 2,061 · U.S. census
- Ruggiero 9,111 · U.S. census
- Ruh 1,062 · U.S. census
- Ruhl 4,541 · U.S. census
- Ruhland 1,539 · U.S. census
- Ruis 1,537 · U.S. census
- Ruiz 175,429 · U.S. census
- Rull 327 · U.S. census
- Rullan 384 · U.S. census
- Rummel 3,739 · U.S. census
- Rumpler 223 · U.S. census
When the index is not enough
This page says where Rui 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.