The Duch surname
In the 2010 U.S. Census, 866 people carried this name — #27,756 among all U.S. surnames, about 1 in every 344,800 people counted. That is down 10% from 965 in 2000.
In Poland’s population register
2,038 people named Duch have a registered home in Poland.
Of the 2,278 in Poland’s national register, these are the ones with a permanent address on file. They live in 15 of Poland’s 16 voivodeships, most of all in Lesser Poland.
Where it concentrates, on the mapWhere they live today
PESEL register, Ministry of Digital Affairs of Poland (dane.gov.pl) — CC0 · living people by voivodeship of permanent residence, 20 January 2026.
In France’s civil register
France’s register of deaths holds 185 people named Duch.
23 of them were born outside France. Those born in France came from 27 départements, most often Savoie.
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 Argentina’s national register
At least 94 people named Duch 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.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they live today
RENAPER (National Registry of Persons, Argentina), surnames of residents by province, December 2021 — CC BY 4.0.
Who carried it
People named Duch,
with a public archive behind them.
-
Kazimierz Duch 1890–1954 · military officer -
Bolesław Bronisław Duch 1896–1980 · military officer -
Joan Duch i Arqués 1899–1929 · writer -
Eugeni Duch i Salvat 1887–1952 · playwright
-
Jan Duch 1888–1940 · military officer
-
Bronisław Duch 1891–1919 · military officer
Wikidata and Wikimedia Commons (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Duch.
- Duc 160 · U.S. census
- Duca 1,314 · U.S. census
- Ducas 318 · U.S. census
- Ducasse 665 · U.S. census
- Ducat 654 · U.S. census
- Ducay 164 · U.S. census
- Duchaine 517 · U.S. census
- Duchamp 147 · U.S. census
- Duchan 103 · U.S. census
- Ducharme 5,797 · U.S. census
- Duchateau 392 · U.S. census
- Duche 108 · U.S. census
When the index is not enough
This page says where Duch 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.