The Diaz surname
In the 2000 U.S. Census, 251,772 people carried this name — #73 among all U.S. surnames, about 1 in every 1,070 people counted.
Free to read. No account, no sign-up.
In France’s civil register
France’s register of deaths holds 3,477 people named Diaz.
1,660 of them were born outside France. Those born in France came from 87 départements, most often Hauts-de-Seine.
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
2,067 people named Diaz live in Switzerland.
They live in 23 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 52 people named Diaz 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 Brussels-Capital.
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.
Who carried it
People named Diaz,
with a public archive behind them.
-
Francis Diaz 1713–1748 · bishop -
Abby Morton Diaz 1821–1904 · writer -
Jules Diaz de Soria 1843–1919 · singer -
Armando Diaz 1861–1928 · military personnel -
Laura Diaz 1920–2008 · politician
Wikidata and Wikimedia Commons (CC0) · 215 lives in all are documented under this name.
Nearby in the index
Surnames next to Diaz.
- Diani 174 · U.S. census
- Diano 386 · U.S. census
- Diarra 237 · U.S. census
- Dias 13,847 · U.S. census
- Diaw 128 · U.S. census
- Diawara 163 · U.S. census
- Dib 512 · U.S. census
- Dibling 145 · U.S. census
- Dicharry 245 · U.S. census
- Dick 21,933 · U.S. census
- Dicker 1,282 · U.S. census
- Didelot 122 · U.S. census
When the index is not enough
This page says where Diaz 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.