The Dedecker surname

In the 2000 U.S. Census, 428 people carried this name — #46,758 among all U.S. surnames, about 1 in every 625,000 people counted.

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In Belgium’s population register

At least 515 people named Dedecker 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 208

Antwerp 113

East Flanders 75

Hainaut 47

Flemish Brabant 38

Brussels-Capital 22

Walloon Brabant 7

Namur 5

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 189 people named Dedecker.

13 of them were born outside France. Those born in France came from 12 départements, most often Nord.

Where it concentrates, on the map

Where they were born

Born outside France 13

Nord 125

Pas-de-Calais 33

Meuse 5

Charente-Maritime 3

Haut-Rhin 2

Somme 2

Vosges 1

Paris 1

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

Nearby in the index

Surnames next to Dedecker.

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