The Tomasi surname
In the 2000 U.S. Census, 914 people carried this name — #25,430 among all U.S. surnames, about 1 in every 294,100 people counted.
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In France’s civil register
France’s register of deaths holds 929 people named Tomasi.
129 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
247 people named Tomasi live in Switzerland.
They live in 16 of Switzerland’s 26 cantons, most of all in Zurich.
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 · names with fewer than 3 bearers in a canton are not published.
In Belgium’s population register
At least 95 people named Tomasi 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.
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.
In print
Tomasi in American newspapers,
1873–1955.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 6,208 pages in all carry the name.
Who carried it
People named Tomasi,
with a public archive behind them.
-
Isabella Tomasi 1645–1690 · religious -
Giuseppe Maria Tomasi 1649–1713 · Catholic priest -
Giulio Fabrizio Tomasi, 8th Prince of Lampedusa 1813–1885 · astronomer -
Pietro Tomasi della Torretta, 12th Prince of Lampedusa 1873–1962 · politician -
Giuseppe Tomasi di Lampedusa 1896–1957 · writer
Wikidata and Wikimedia Commons (CC0) · 87 lives in all are documented under this name.
Nearby in the index
Surnames next to Tomasi.
- Tolosa 530 · U.S. census
- Tom 9,629 · U.S. census
- Toma 3,229 · U.S. census
- Tomas 4,894 · U.S. census
- Tomaselli 1,224 · U.S. census
- Tomasello 2,380 · U.S. census
- Tomasini 891 · U.S. census
- Tomasino 670 · U.S. census
- Tomassi 634 · U.S. census
- Tomasso 709 · U.S. census
- Tomaszewski 3,677 · U.S. census
- Tomczak 2,550 · U.S. census
When the index is not enough
This page says where Tomasi 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.