The Dario surname
In the 2010 U.S. Census, 560 people carried this name — #39,281 among all U.S. surnames, about 1 in every 526,300 people counted. That is up 21% from 462 in 2000.
Where the name comes from
The origin of the Dario surname
Borrowed from Italian Dario and Spanish Darío.
From Wiktionary, the free dictionary (en.wiktionary.org) — entry «Dario» (English), 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 288 people named Dario 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 161 people named Dario.
20 of them were born outside France. Those born in France came from 18 départements, most often Haute-Garonne.
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
34 people named Dario live in Switzerland.
They live in 5 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.
Nearby in the index
Surnames next to Dario.
- Dare 3,472 · U.S. census
- Darey 105 · U.S. census
- Dargon 186 · U.S. census
- Darien 324 · U.S. census
- Daries 212 · U.S. census
- Darin 759 · U.S. census
- Darius 831 · U.S. census
- Darley 1,886 · U.S. census
- Darmanin 168 · U.S. census
- Darmon 215 · U.S. census
- Darnes 170 · U.S. census
- Darney 292 · U.S. census
When the index is not enough
This page says where Dario 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.