The Denes surname
In the 2010 U.S. Census, 435 people carried this name — #48,530 among all U.S. surnames, about 1 in every 666,700 people counted. That is down 14% from 507 in 2000.
In France’s civil register
France’s register of deaths holds 346 people named Denes.
15 of them were born outside France. Those born in France came from 22 départements, most often Côtes-d’Armor.
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 Poland’s population register
202 people named Denes have a registered home in Poland.
Of the 240 in Poland’s national register, these are the ones with a permanent address on file. They live in 7 of Poland’s 16 voivodeships, most of all in Lower Silesian.
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 Argentina’s national register
At least 56 people named Denes 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.
In Switzerland’s population statistics
32 people named Denes live in Switzerland.
They live in 8 of Switzerland’s 26 cantons, most of all in St. Gallen.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where 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.
In the Nordic population registers
42 people named Denes is counted in Sweden.
Sweden’s figure is from 31 December 2022, the last count Statistics Sweden published.
Counted, by country
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).
In print
Denes in American newspapers,
1896–1927.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 4,102,178 pages in all carry the name.
Who carried it
People named Denes,
with a public archive behind them.
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Kazimierz Króliński 1874–1938 · writer
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Friederike Denes 1874–1943
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Ivan Denes 1928–2011 · writer
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Ivan Denes 1928–2011 · writer
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Lucia Rothman-Denes 1943– · chemist
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Lucia Rothman-Denes 1943– · chemist
Wikidata (CC0) · 8 lives in all are documented under this name.
Nearby in the index
Surnames next to Denes.
- Denamur 156 · U.S. census
- Denard 1,003 · U.S. census
- Dene 193 · U.S. census
- Deneau 617 · U.S. census
- Denegre 106 · U.S. census
- Denegri 248 · U.S. census
- Denet 145 · U.S. census
- Deneve 397 · U.S. census
- Deney 113 · U.S. census
- Dengler 2,167 · U.S. census
- Denier 270 · U.S. census
- Denis 6,818 · U.S. census
When the index is not enough
This page says where Denes 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.