The Tosi surname
In the 2010 U.S. Census, 920 people carried this name — #26,516 among all U.S. surnames, about 1 in every 322,600 people counted. That is up 7% from 859 in 2000.
In Argentina’s national register
At least 1,428 people named Tosi live in Argentina.
RENAPER only publishes a name in a province when more than ten people there share it, so the real number is higher. Most of them live in Buenos Aires Province.
Where it concentrates, on the mapWhere they live today
RENAPER (National Registry of Persons, Argentina), surnames of residents by province, December 2021 — CC BY 4.0.
In France’s civil register
France’s register of deaths holds 584 people named Tosi.
147 of them were born outside France. Those born in France came from 52 départements, most often Corsica.
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
194 people named Tosi live in Switzerland.
They live in 13 of Switzerland’s 26 cantons, most of all in Ticino.
Where it concentrates, on the mapWhere they live today
Swiss Federal Statistical Office (FSO), «Surnames of the permanent resident population by canton», 2025, opendata.swiss/en/dataset/nachnamen-der-standigen-wohnbevolkerung-nach-kanton3 · names with fewer than 3 bearers in a canton are not published.
Nearby in the index
Surnames next to Tosi.
- Torti 454 · U.S. census
- Tortora 1,355 · U.S. census
- Tortorici 934 · U.S. census
- Toscani 156 · U.S. census
- Toscano 9,301 · U.S. census
- Toschi 187 · U.S. census
- Toso 760 · U.S. census
- Tosten 228 · U.S. census
- Tosti 685 · U.S. census
- Tota 367 · U.S. census
- Totaro 772 · U.S. census
- Toth 19,606 · U.S. census
When the index is not enough
This page says where Tosi 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.