The Prosperi surname
In the 2000 U.S. Census, 419 people carried this name — #47,575 among all U.S. surnames, about 1 in every 625,000 people counted.
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In France’s civil register
France’s register of deaths holds 190 people named Prosperi.
37 of them were born outside France. Those born in France came from 19 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
51 people named Prosperi live in Switzerland.
They live in 5 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 Prosperi.
- Proietti 409 · U.S. census
- Prokop 3,014 · U.S. census
- Prola 133 · U.S. census
- Pron 157 · U.S. census
- Prophete 745 · U.S. census
- Prosper 1,132 · U.S. census
- Prospero 396 · U.S. census
- Prost 742 · U.S. census
- Protano 117 · U.S. census
- Proteau 176 · U.S. census
- Proto 1,190 · U.S. census
- Proud 1,310 · U.S. census
When the index is not enough
This page says where Prosperi 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.