The Poisson surname
In the 2000 U.S. Census, 1,736 people carried this name — #15,485 among all U.S. surnames, about 1 in every 156,300 people counted.
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In France’s civil register
France’s register of deaths holds 5,449 people named Poisson.
30 of them were born outside France. Those born in France came from 91 départements, most often Paris.
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 60 people named Poisson 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.
In Switzerland’s population statistics
52 people named Poisson live in Switzerland.
They live in 6 of Switzerland’s 26 cantons, most of all in Vaud.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they live today
Swiss Federal Statistical Office (FSO), «Surnames of the permanent resident population by canton», 2025, opendata.swiss · names with fewer than 3 bearers in a canton are not published.
Nearby in the index
Surnames next to Poisson.
- Poire 209 · U.S. census
- Poirier 9,055 · U.S. census
- Poirot 361 · U.S. census
- Poiroux 126 · U.S. census
- Poirrier 546 · U.S. census
- Poissant 651 · U.S. census
- Poitier 439 · U.S. census
- Pokorski 519 · U.S. census
- Pol 1,016 · U.S. census
- Polack 619 · U.S. census
- Polak 3,002 · U.S. census
- Polard 118 · U.S. census
When the index is not enough
This page says where Poisson 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.