The Masso surname
In the 2000 U.S. Census, 878 people carried this name — #26,191 among all U.S. surnames, about 1 in every 303,000 people counted.
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In France’s civil register
France’s register of deaths holds 64 people named Masso.
23 of them were born outside France. Those born in France came from 16 départements, most often Somme.
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 Switzerland’s population statistics
40 people named Masso live in Switzerland.
They live in 6 of Switzerland’s 26 cantons, most of all in Basel-Landschaft.
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 Masso.
- Massimi 223 · U.S. census
- Massimino 543 · U.S. census
- Massin 128 · U.S. census
- Massing 415 · U.S. census
- Massini 139 · U.S. census
- Massis 120 · U.S. census
- Masson 2,718 · U.S. census
- Massone 147 · U.S. census
- Massoni 462 · U.S. census
- Massucco 163 · U.S. census
- Massy 253 · U.S. census
- Mast 12,869 · U.S. census
When the index is not enough
This page says where Masso 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.