The Denis surname
In the 2010 U.S. Census, 6,818 people carried this name — #5,133 among all U.S. surnames, about 1 in every 43,300 people counted. That is up 26% from 5,418 in 2000.
In France’s civil register
France’s register of deaths holds 21,033 people named Denis.
324 of them were born outside France. Those born in France came from 105 départements, most often Paris.
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 6,646 people named Denis 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 mapWhere they live today
RENAPER (National Registry of Persons, Argentina), surnames of residents by province, December 2021 — CC BY 4.0.
In Belgium’s population register
At least 6,050 people named Denis 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.
Where it concentrates, on the mapWhere they live today
Statbel (Statistics Belgium), family names of the population by municipality, 1 January 2026 — CC BY 4.0.
In Poland’s population register
1,214 people named Denis have a registered home in Poland.
Of the 1,394 in Poland’s national register, these are the ones with a permanent address on file. They live in 14 of Poland’s 16 voivodeships, most of all in Lublin.
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 Switzerland’s population statistics
284 people named Denis live in Switzerland.
They live in 12 of Switzerland’s 26 cantons, most of all in Valais.
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/en/dataset/nachnamen-der-standigen-wohnbevolkerung-nach-kanton3 · names with fewer than 3 bearers in a canton are not published.
In print
Denis in American newspapers,
1883–1909.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 290,989 pages in all carry the name.
Who carried it
People named Denis,
with a public archive behind them.
-
Jean II Denis 1600–1672 · organist -
Jean-Baptiste Denys 1635–1704 · physician -
Michael Denis 1729–1800 · writer -
Alphonse Denis 1794–1876 · writer -
Pierre Denis 1828–1907 · playwright
Wikidata and Wikimedia Commons (CC0) · 195 lives in all are documented under this name.
Nearby in the index
Surnames next to Denis.
- Denes 435 · 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
- Denise 751 · U.S. census
- Denizard 230 · U.S. census
- Denne 614 · U.S. census
- Denner 1,045 · U.S. census
- Dennery 167 · U.S. census
- Denni 105 · U.S. census
When the index is not enough
This page says where Denis 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.