The Lio surname
In the 2010 U.S. Census, 516 people carried this name — #42,094 among all U.S. surnames, about 1 in every 588,200 people counted. That is up 13% from 457 in 2000.
In Argentina’s national register
At least 364 people named Lio 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 50 people named Lio.
20 of them were born outside France. Those born in France came from 7 départements, most often Bas-Rhin.
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
49 people named Lio live in Switzerland.
They live in 6 of Switzerland’s 26 cantons, most of all in Vaud.
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 Lio,
with a public archive behind them.
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Augie Lio 1918–1989 · American football player
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Ermenegildo Lio 1920–1992 · theologian
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Ermenegildo Lio 1920–1992 · theologian
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Kåre Geir Lio 1953–
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Renato Lio 1956–1991 · military personnel
Wikidata (CC0).
Nearby in the index
Surnames next to Lio.
- Link 22,137 · U.S. census
- Linke 1,962 · U.S. census
- Linne 612 · U.S. census
- Lino 3,625 · U.S. census
- Linster 264 · U.S. census
- Lintz 2,050 · U.S. census
- Lion 929 · U.S. census
- Lions 315 · U.S. census
- Liotta 1,407 · U.S. census
- Liou 1,162 · U.S. census
- Lipari 2,048 · U.S. census
- Lipinski 3,615 · U.S. census
When the index is not enough
This page says where Lio 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.