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

The Denys surname

In the 2010 U.S. Census, 361 people carried this name — #56,588 among all U.S. surnames, about 1 in every 833,300 people counted. That is up 14% from 317 in 2000.

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In Belgium’s population register

At least 1,958 people named Denys 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 West Flanders.

Where it concentrates, on the map

Where they live today

West Flanders 1,308
East Flanders 215
Hainaut 154
Antwerp 80
Walloon Brabant 52
Brussels-Capital 45
Flemish Brabant 40
Namur 31

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

In France’s civil register

France’s register of deaths holds 1,363 people named Denys.

57 of them were born outside France. Those born in France came from 74 départements, most often Nord.

Where it concentrates, on the map

Where they were born

Born outside France 57
Nord 552
Pas-de-Calais 105
Paris 74
Ardennes 59
Meurthe-et-Moselle 34
Somme 29
Aisne 26
Yvelines 26

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

In Poland’s population register

346 people named Denys have a registered home in Poland.

Of the 624 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 Łódź.

Where it concentrates, on the map

Where they live today

Łódź 94
Lower Silesian 61
Lublin 51
Silesian 30
Warmian-Masurian 29
Greater Poland 19
Masovian 16
West Pomeranian 12

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

39 people named Denys live in Switzerland.

They live in 4 of Switzerland’s 26 cantons, most of all in Vaud.

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

Where they live today

Vaud 15
Bern 10
Neuchâtel 10
Zurich 4

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.

Who carried it

People named Denys,
with a public archive behind them.

  • Thomas Denys
    Thomas Denys 1477–1561 · politician
  • Gilbert Denys d. 1422 · politician
  • Robert Denys d. 1592 · politician
  • Alice Denys 1398–
  • Maurice Denys 1410–1466
  • Hugh Denys 1440–1511

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

Nearby in the index

Surnames next to Denys.

When the index is not enough

This page says where Denys 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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