The Gregorio surname
In the 2010 U.S. Census, 5,228 people carried this name — #6,494 among all U.S. surnames, about 1 in every 56,500 people counted. That is up 40% from 3,746 in 2000.
What the name means
The meaning of the Gregorio surname
A surname originating as a patronymic.
Via Latin Grēgorius, from post-classical Ancient Greek Γρηγόριος (Grēgórios, “watchful, vigilant”).
From Wiktionary, the free dictionary (en.wiktionary.org) — entry «Gregorio» (Italian), 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 3,105 people named Gregorio 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
274 people named Gregorio live in Switzerland.
They live in 18 of Switzerland’s 26 cantons, most of all in Ticino.
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 166 people named Gregorio.
75 of them were born outside France. Those born in France came from 25 départements, most often Alpes-Maritimes.
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
Gregorio in American newspapers,
1886–1929.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 29,453 pages in all carry the name.
Who carried it
People named Gregorio,
with a public archive behind them.
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Rose Gregorio 1925–2023 · actor -
Arlen F. Gregorio 1931– · politician -
Alfonso Gregorio d. 1602 · Catholic bishop
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José de Gregorio y Mauro 1725–1784 · military personnel
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Rosario Gregorio 1753–1809 · historian
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Antonio de Gregorio y Verdugo 1755–1842 · military personnel
Wikidata and Wikimedia Commons (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Gregorio.
- Green 430,182 · U.S. census
- Greff 516 · U.S. census
- Grego 1,126 · U.S. census
- Gregoire 5,757 · U.S. census
- Gregor 4,180 · U.S. census
- Gregori 461 · U.S. census
- Gregory 91,384 · U.S. census
- Greil 125 · U.S. census
- Grein 762 · U.S. census
- Greiner 8,935 · U.S. census
- Grell 1,898 · U.S. census
- Grelle 449 · U.S. census
When the index is not enough
This page says where Gregorio 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.