The Cousin surname
In the 2000 U.S. Census, 2,968 people carried this name — #10,018 among all U.S. surnames, about 1 in every 90,900 people counted.
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In France’s civil register
France’s register of deaths holds 11,015 people named Cousin.
78 of them were born outside France. Those born in France came from 97 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.
In Belgium’s population register
At least 384 people named Cousin 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 Hainaut.
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 Switzerland’s population statistics
149 people named Cousin live in Switzerland.
They live in 10 of Switzerland’s 26 cantons, most of all in Vaud.
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 Cousin.
- Courtemanche 1,618 · U.S. census
- Courtier 326 · U.S. census
- Courtin 105 · U.S. census
- Courtois 1,162 · U.S. census
- Courville 3,227 · U.S. census
- Coury 1,735 · U.S. census
- Cousineau 2,175 · U.S. census
- Coussens 237 · U.S. census
- Coutant 439 · U.S. census
- Coute 119 · U.S. census
- Coutinho 656 · U.S. census
- Couto 2,848 · U.S. census
When the index is not enough
This page says where Cousin 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.