The Grego surname
In the 2010 U.S. Census, 1,126 people carried this name — #22,749 among all U.S. surnames, about 1 in every 263,200 people counted. That is down 9% from 1,238 in 2000.
In Argentina’s national register
At least 177 people named Grego 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 143 people named Grego.
23 of them were born outside France. Those born in France came from 19 départements, most often Guadeloupe.
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
31 people named Grego live in Switzerland.
They live in 5 of Switzerland’s 26 cantons, most of all in Zurich.
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.
Who carried it
People named Grego,
with a public archive behind them.
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Andrea Grego da Peschiera 1400–1485 · Catholic priest -
Jim Grego 1955– · politician -
Joseph Grego 1843–1908 · writer
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Attilio Grego 1896–1925
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Karin Grego 1936– · badminton player
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Giuliana Grego Bolli 1952– · university teacher
Wikidata and Wikimedia Commons (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Grego.
- Grech 1,235 · U.S. census
- Greck 136 · U.S. census
- Greco 17,150 · U.S. census
- Greder 139 · U.S. census
- Green 430,182 · U.S. census
- Greff 516 · U.S. census
- Gregoire 5,757 · U.S. census
- Gregor 4,180 · U.S. census
- Gregori 461 · U.S. census
- Gregorio 5,228 · U.S. census
- Gregory 91,384 · U.S. census
- Greil 125 · U.S. census
When the index is not enough
This page says where Grego 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.