The Castin surname
In the 2010 U.S. Census, 203 people carried this name — #90,853 among all U.S. surnames, about 1 in every 1,428,600 people counted. That is up 28% from 158 in 2000.
In France’s civil register
France’s register of deaths holds 188 people named Castin.
3 of them were born outside France. Those born in France came from 27 départements, most often Deux-Sèvres.
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 62 people named Castin 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.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where 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 Castin,
with a public archive behind them.
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Robert Castin 1918–1979 · military personnel
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Régis Castin 1972– · politician
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Dutty Dior 1996–2024 · songwriter
Wikidata (CC0).
Nearby in the index
Surnames next to Castin.
- Castiglione 2,139 · U.S. census
- Castiglioni 143 · U.S. census
- Castilla 2,071 · U.S. census
- Castille 2,821 · U.S. census
- Castillo 230,420 · U.S. census
- Castillon 1,657 · U.S. census
- Castor 6,063 · U.S. census
- Castro 184,134 · U.S. census
- Castronovo 629 · U.S. census
- Casula 174 · U.S. census
- Cat 182 · U.S. census
- Catala 869 · U.S. census
When the index is not enough
This page says where Castin 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.