The Decroix surname
In the 2010 U.S. Census, 200 people carried this name — #91,981 among all U.S. surnames, about 1 in every 1,428,600 people counted. That is up 23% from 163 in 2000.
In France’s civil register
France’s register of deaths holds 2,096 people named Decroix.
38 of them were born outside France. Those born in France came from 67 départements, most often Pas-de-Calais.
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 Belgium’s population register
At least 517 people named Decroix 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 mapWhere they live today
Statbel (Statistics Belgium), family names of the population by municipality, 1 January 2026 — CC BY 4.0.
Who carried it
People named Decroix,
with a public archive behind them.
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Adolphe Decroix 1810–1894 · politician -
Jules Decroix 1818–1889 · banker -
Jacques Joseph Marie Decroix 1746–1826 · publisher
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Maurice Decroix 1878–1936 · painter
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Émile Decroix 1904–1967 · sport cyclist
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Michel Decroix 1922–2007 · sport cyclist
Wikidata and Wikimedia Commons (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Decroix.
- Decosse 185 · U.S. census
- Decoster 1,084 · U.S. census
- Decot 174 · U.S. census
- Decou 480 · U.S. census
- Decoux 382 · U.S. census
- Decraene 232 · U.S. census
- Dede 625 · U.S. census
- Dedecker 457 · U.S. census
- Deel 4,478 · U.S. census
- Defay 238 · U.S. census
- Defendini 103 · U.S. census
- Defer 297 · U.S. census
When the index is not enough
This page says where Decroix 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.