Diez surname: U.S. census count, rank and records | FamilyCrests

The Diez surname

In the 2010 U.S. Census, 3,502 people carried this name — #9,293 among all U.S. surnames, about 1 in every 84,000 people counted. That is up 19% from 2,953 in 2000.

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In Argentina’s national register

At least 11,529 people named Diez 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 map

Where they live today

Buenos Aires Province 5,561
City of Buenos Aires 1,180
Santa Fe 879
Córdoba 634
Salta 477
Chaco 388
Mendoza 297
Tucumán 292

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 919 people named Diez.

331 of them were born outside France. Those born in France came from 67 départements, most often Paris.

Where it concentrates, on the map

Where they were born

Born outside France 331
Paris 68
Hauts-de-Seine 64
Gironde 52
Vosges 47
Hérault 28
Ardennes 27
Pyrénées-Atlantiques 21
Meurthe-et-Moselle 19

Fichier des personnes décédées, INSEE — Licence Ouverte 2.0 · deaths recorded in France since 1970, by place of birth.

In Switzerland’s population statistics

245 people named Diez live in Switzerland.

They live in 14 of Switzerland’s 26 cantons, most of all in Zurich.

Where it concentrates, on the map

Where they live today

Zurich 54
Vaud 37
Geneva 37
St. Gallen 26
Bern 24
Valais 13
Aargau 11
Thurgau 11

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.

In Belgium’s population register

At least 53 people named Diez 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 Namur.

Too few records to say where it concentrates region by region — these are plain counts, not shares.

Where they live today

Namur 28
Liège 16
Luxembourg Province 9

Statbel (Statistics Belgium), family names of the population by municipality, 1 January 2026 — CC BY 4.0.

In the Nordic population registers

29 people named Diez is counted in Sweden.

Sweden’s figure is from 31 December 2022, the last count Statistics Sweden published.

Counted, by country

Sweden (2022) 29

Own calculations based on data from Statistics Sweden (SCB), surnames with at least two bearers, 31 December 2022 — CC BY 4.0 (names with 20 or more bearers shown).

Who carried it

People named Diez,
with a public archive behind them.

  • Friedrich Christian Diez
    Friedrich Christian Diez 1794–1876 · writer
  • Samuel Friedrich Diez
    Samuel Friedrich Diez 1803–1873 · painter
  • Jutta of Diez d. 1397 · count
  • Diego Díez Ferreras d. 1697 · painter
  • Gerhard VII of Diez 1350–1388 · count
  • Christoph Ernst Graf von Dietz 1543–1603

Wikidata and Wikimedia Commons (CC0) · 10 lives in all are documented under this name.

Nearby in the index

Surnames next to Diez.

When the index is not enough

This page says where Diez 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.

See what a volume holds
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