The Masiero surname
In the 2010 U.S. Census, 217 people carried this name — #86,005 among all U.S. surnames, about 1 in every 1,428,600 people counted. That is up 14% from 190 in 2000.
In Argentina’s national register
At least 289 people named Masiero 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 Mendoza.
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 90 people named Masiero.
31 of them were born outside France. Those born in France came from 15 départements, most often Nord.
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
62 people named Masiero live in Switzerland.
They live in 4 of Switzerland’s 26 cantons, most of all in Ticino.
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/en/dataset/nachnamen-der-standigen-wohnbevolkerung-nach-kanton3 · names with fewer than 3 bearers in a canton are not published.
Nearby in the index
Surnames next to Masiero.
- Mascio 599 · U.S. census
- Mascolo 775 · U.S. census
- Masella 679 · U.S. census
- Maselli 1,544 · U.S. census
- Masi 3,083 · U.S. census
- Masia 156 · U.S. census
- Masini 459 · U.S. census
- Masino 837 · U.S. census
- Maslanka 872 · U.S. census
- Maslin 412 · U.S. census
- Maso 213 · U.S. census
- Mason 160,213 · U.S. census
When the index is not enough
This page says where Masiero 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.