The Cas surname
In the 2000 U.S. Census, 115 people carried this name — #134,929 among all U.S. surnames, about 1 in every 2,500,000 people counted.
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In France’s civil register
France’s register of deaths holds 308 people named Cas.
6 of them were born outside France. Those born in France came from 34 départements, most often Bouches-du-Rhône.
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 20 people named Cas 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 Antwerp.
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 Cas.
- Caruso 20,257 · U.S. census
- Carvajal 6,411 · U.S. census
- Carvalho 9,131 · U.S. census
- Carville 444 · U.S. census
- Carvin 806 · U.S. census
- Cary 12,013 · U.S. census
- Casa 637 · U.S. census
- Casabianca 140 · U.S. census
- Casadei 183 · U.S. census
- Casado 1,889 · U.S. census
- Casagrande 1,236 · U.S. census
- Casal 813 · U.S. census
When the index is not enough
This page says where Cas 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.