The Orso surname
In the 2010 U.S. Census, 1,142 people carried this name — #22,516 among all U.S. surnames, about 1 in every 256,400 people counted. That is up 4% from 1,099 in 2000.
In Argentina’s national register
At least 487 people named Orso 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 78 people named Orso.
18 of them were born outside France. Those born in France came from 18 départements, most often Var.
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
21 people named Orso live in Switzerland.
They live in 2 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 Orso,
with a public archive behind them.
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Anna Orso 1938–2012 · film actor -
Anna Orso 1938–2012 · film actor
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Pietro Orso d. 1452 · Catholic priest
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Francesco Orso d. 1522
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Michel Orso 1936– · singer
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Jean-Charles Orso 1958– · rugby union player
Wikidata and Wikimedia Commons (CC0) · 9 lives in all are documented under this name.
Nearby in the index
Surnames next to Orso.
- Orozco 65,904 · U.S. census
- Ors 126 · U.S. census
- Orsatti 214 · U.S. census
- Orsetti 100 · U.S. census
- Orsi 1,100 · U.S. census
- Orsini 3,055 · U.S. census
- Orta 7,820 · U.S. census
- Ortega 127,256 · U.S. census
- Ortel 320 · U.S. census
- Orth 6,345 · U.S. census
- Ortis 1,584 · U.S. census
- Ortiz 286,899 · U.S. census
When the index is not enough
This page says where Orso 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.