The Lassus surname
In the 2010 U.S. Census, 219 people carried this name — #85,357 among all U.S. surnames, about 1 in every 1,428,600 people counted. That is down 2% from 223 in 2000.
In France’s civil register
France’s register of deaths holds 1,304 people named Lassus.
47 of them were born outside France. Those born in France came from 61 départements, most often Pyrénées-Atlantiques.
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 Argentina’s national register
At least 49 people named Lassus 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 Buenos Aires Province.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they live today
RENAPER (National Registry of Persons, Argentina), surnames of residents by province, December 2021 — CC BY 4.0.
In the Nordic population registers
149 people named Lassus are counted in Finland and Sweden.
Sweden’s figure is from 31 December 2022, the last count Statistics Sweden published. Finland counts its citizens, at home or abroad.
Counted, by country
Own calculations based on data from Statistics Sweden (SCB), surnames with at least two bearers, 31 December 2022 — CC BY 4.0 (names with 20 or more bearers shown) · Digital and Population Data Services Agency (DVV), Finland, surname statistics, August 2026 — CC BY 4.0.
Who carried it
People named Lassus,
with a public archive behind them.
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Jean-Baptiste-Antoine Lassus 1807–1857 · architect -
Jean Lassus 1903–1990 · archaeologist
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Robert Lassus 1930–2004 · writer
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Dominique Lassus 1938– · diplomat
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Pierre Lassus 1945– · essayist
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Alain Lassus 1950– · physician
Wikidata and Wikimedia Commons (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Lassus.
- Lasseigne 998 · U.S. census
- Lasselle 128 · U.S. census
- Lasser 648 · U.S. census
- Lassere 315 · U.S. census
- Lasserre 274 · U.S. census
- Lasson 210 · U.S. census
- Lastella 321 · U.S. census
- Lata 1,044 · U.S. census
- Latapie 115 · U.S. census
- Latella 560 · U.S. census
- Latil 141 · U.S. census
- Latini 738 · U.S. census
When the index is not enough
This page says where Lassus 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.