The Gagliardo surname
In the 2010 U.S. Census, 822 people carried this name — #28,909 among all U.S. surnames, about 1 in every 357,100 people counted. That is down 17% from 986 in 2000.
In Argentina’s national register
At least 629 people named Gagliardo 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 62 people named Gagliardo.
Most of them — 36 — were born outside France. Those born in France came from 10 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 Switzerland’s population statistics
59 people named Gagliardo live in Switzerland.
They live in 6 of Switzerland’s 26 cantons, most of all in Geneva.
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 Gagliardo,
with a public archive behind them.
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Giovanni Battista Gagliardo 1757–1823 · economist -
Giovanni Battista Gagliardo 1757–1823 · economist
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Ruth Gagliardo 1895–1980 · librarian -
Lazzaro Gagliardo 1835–1899 · politician
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Alberto Helios Gagliardo 1893–1987 · painter
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Elena Gagliardo 1901–
Wikidata and Wikimedia Commons (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Gagliardo.
- Gaetan 232 · U.S. census
- Gage 16,614 · U.S. census
- Gager 1,261 · U.S. census
- Gaggini 101 · U.S. census
- Gagliano 4,161 · U.S. census
- Gagliardi 5,404 · U.S. census
- Gaglio 777 · U.S. census
- Gaglione 697 · U.S. census
- Gagnard 338 · U.S. census
- Gagne 9,507 · U.S. census
- Gagner 1,684 · U.S. census
- Gagnet 124 · U.S. census
When the index is not enough
This page says where Gagliardo 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.