The Sampaio surname
In the 2010 U.S. Census, 709 people carried this name — #32,438 among all U.S. surnames, about 1 in every 416,700 people counted. That is up 96% from 362 in 2000.
What the name means
The meaning of the Sampaio surname
From Portuguese São + Paio, "Saint Pelagius", referring to Pelagius of Córdoba.
From Wiktionary, the free dictionary (en.wiktionary.org) — entry «Sampaio» (English), by Wiktionary contributors · licensed CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0) · excerpt, lightly adapted.
In Switzerland’s population statistics
447 people named Sampaio 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 Argentina’s national register
At least 242 people named Sampaio 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 102 people named Sampaio.
Most of them — 67 — were born outside France. Those born in France came from 18 départements, most often Val-d’Oise.
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
Sampaio in American newspapers,
1922.
Chronicling America, Library of Congress — digitised newspapers in the public domain.
Who carried it
People named Sampaio,
with a public archive behind them.
-
Lopo Vaz de Sampaio 1480–1534 · politician -
Pedro da Silva Sampaio 1572–1649 · Catholic priest -
Manuel Gregório de Sousa Pereira de Sampaio 1766–1844 · military personnel -
Henrique Teixeira de Sampaio 1774–1833 · politician -
António Rodrigues Sampaio 1806–1882 · politician
Wikidata and Wikimedia Commons (CC0) · 150 lives in all are documented under this name.
Nearby in the index
Surnames next to Sampaio.
- Samedi 381 · U.S. census
- Sammartano 217 · U.S. census
- Sammartino 747 · U.S. census
- Sammut 441 · U.S. census
- Samour 134 · U.S. census
- Samoy 195 · U.S. census
- Samper 409 · U.S. census
- Sampere 109 · U.S. census
- Sampieri 196 · U.S. census
- Sampietro 158 · U.S. census
- Sampson 39,277 · U.S. census
- Samson 11,123 · U.S. census
When the index is not enough
This page says where Sampaio 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.