The Barreiro surname
In the 2010 U.S. Census, 2,125 people carried this name — #14,139 among all U.S. surnames, about 1 in every 138,900 people counted. That is up 27% from 1,678 in 2000.
Where the name comes from
The origin of the Barreiro surname
A surname from Galician, Portuguese, or Spanish.
Borrowed from Galician Barreiro, Portuguese Barreiro, and Spanish Barreiro.
From Wiktionary, the free dictionary (en.wiktionary.org) — entry «Barreiro» (English), by Wiktionary contributors · licensed CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0) · excerpt, lightly adapted.
In Argentina’s national register
At least 7,076 people named Barreiro 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.
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 Switzerland’s population statistics
345 people named Barreiro live in Switzerland.
They live in 17 of Switzerland’s 26 cantons, most of all in Geneva.
Where it concentrates, on the mapWhere 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.
In France’s civil register
France’s register of deaths holds 70 people named Barreiro.
Most of them — 49 — were born outside France. Those born in France came from 13 départements, most often Pyrénées-Atlantiques.
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 print
Barreiro in American newspapers,
1913–1929.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 2,540 pages in all carry the name.
Who carried it
People named Barreiro,
with a public archive behind them.
-
Miguel Barreiro 1789–1848 · politician -
José María Barreiro Manjón 1793–1819 · military personnel -
Bernardo Barreiro 1850–1904 · writer -
Lisardo Barreiro 1862–1943 · pharmacist -
Agustín Jesús Barreiro Martínez 1865–1937 · naturalist -
Jesús Barreiro Costoya d. 1920 · writer
Wikidata and Wikimedia Commons (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Barreiro.
- Barranger 149 · U.S. census
- Barras 2,512 · U.S. census
- Barre 2,205 · U.S. census
- Barreau 342 · U.S. census
- Barreda 1,034 · U.S. census
- Barreira 436 · U.S. census
- Barrera 60,998 · U.S. census
- Barrere 312 · U.S. census
- Barrero 704 · U.S. census
- Barres 242 · U.S. census
- Barresi 1,123 · U.S. census
- Barret 1,430 · U.S. census
When the index is not enough
This page says where Barreiro 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.