The Caballero surname
In the 2000 U.S. Census, 20,270 people carried this name — #1,620 among all U.S. surnames, about 1 in every 13,300 people counted.
In Argentina’s national register
At least 54,620 people named Caballero 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 France’s civil register
France’s register of deaths holds 469 people named Caballero.
210 of them were born outside France. Those born in France came from 43 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 Switzerland’s population statistics
257 people named Caballero live in Switzerland.
They live in 16 of Switzerland’s 26 cantons, most of all in Zurich.
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 · names with fewer than 3 bearers in a canton are not published.
In Belgium’s population register
At least 32 people named Caballero 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 Hainaut.
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 print
Caballero in American newspapers,
1936–1947.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 113,035 pages in all carry the name.
Who carried it
People named Caballero,
with a public archive behind them.
-
Raimundo Diosdado Caballero 1740–1829 · writer -
José Antonio Caballero 1754–1821 · politician -
Pedro Juan Caballero 1786–1821 · military personnel -
Fermín Caballero 1800–1876 · writer -
Antonio Caballero Fernández de Rodas 1816–1876 · military personnel
Wikidata and Wikimedia Commons (CC0) · 235 lives in all are documented under this name.
Nearby in the index
Surnames next to Caballero.
When the index is not enough
This page says where Caballero 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.