The Cossu surname
In the 2000 U.S. Census, 143 people carried this name — #113,519 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 366 people named Cossu.
101 of them were born outside France. Those born in France came from 30 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 Switzerland’s population statistics
100 people named Cossu live in Switzerland.
They live in 9 of Switzerland’s 26 cantons, most of all in Ticino.
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 Cossu.
- Cosme 4,140 · U.S. census
- Cossa 205 · U.S. census
- Cossart 102 · U.S. census
- Cosse 350 · U.S. census
- Cossin 474 · U.S. census
- Cosson 386 · U.S. census
- Costa 35,227 · U.S. census
- Costagliola 385 · U.S. census
- Costantini 1,023 · U.S. census
- Costantino 3,028 · U.S. census
- Costanza 3,242 · U.S. census
- Costanzo 5,928 · U.S. census
When the index is not enough
This page says where Cossu 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.