The Mergen surname
In the 2010 U.S. Census, 850 people carried this name — #28,158 among all U.S. surnames, about 1 in every 344,800 people counted. That is up 17% from 724 in 2000.
In Argentina’s national register
At least 259 people named Mergen 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 Santa Fe.
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 France’s civil register
France’s register of deaths holds 135 people named Mergen.
9 of them were born outside France. Those born in France came from 12 départements, most often Moselle.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where 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 82 people named Mergen 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 East Flanders.
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 Mergen,
with a public archive behind them.
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Nicolas Mergen 1825–1903 · judge
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Théodore Mergen 1841–1908 · sculptor
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Jean-Théodore Mergen 1884–1942 · sculptor
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Ahmet Niyazi Mergen 1887–1959 · bureaucrat
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Ahmet Niyazi Mergen 1887–1959 · bureaucrat
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Katharine Norrid Mergen 1910–1997 · university teacher
Wikidata (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Mergen.
When the index is not enough
This page says where Mergen 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.