The Longo surname
In the 2000 U.S. Census, 12,122 people carried this name — #2,731 among all U.S. surnames, about 1 in every 22,300 people counted.
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In France’s civil register
France’s register of deaths holds 750 people named Longo.
Most of them — 395 — were born outside France. Those born in France came from 49 départements, most often Tarn.
Where it concentrates, on the mapWhere 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
726 people named Longo live in Switzerland.
They live in 20 of Switzerland’s 26 cantons, most of all in Zurich.
Where it concentrates, on the mapWhere they live today
Swiss Federal Statistical Office (FSO), «Surnames of the permanent resident population by canton», 2025, opendata.swiss · names with fewer than 3 bearers in a canton are not published.
In Belgium’s population register
At least 128 people named Longo live in Belgium.
Statbel only publishes a name in a municipality when five or more people there share it, so the real number is higher. Most of them live in Hainaut.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where they live today
Statbel (Statistics Belgium), family names of the population by municipality, 1 January 2026 — CC BY 4.0.
Who carried it
People named Longo,
with a public archive behind them.
-
Giovanni Giustiniani 1418–1453 · military personnel -
Maria Lorenza Longo 1463–1542 · Christian nun -
Giannandrea Giustiniani Longo 1494–1554 · politician -
Alessandro Giustiniani Longo 1554–1631 · politician -
Giacomo Longo 1818–1906 · military personnel
Wikidata and Wikimedia Commons (CC0) · 242 lives in all are documented under this name.
Nearby in the index
Surnames next to Longo.
- Longchamps 202 · U.S. census
- Longe 837 · U.S. census
- Longer 266 · U.S. census
- Longhi 502 · U.S. census
- Longin 109 · U.S. census
- Longinotti 218 · U.S. census
- Longobardi 730 · U.S. census
- Loo 3,237 · U.S. census
- Loock 309 · U.S. census
- Loof 161 · U.S. census
- Loor 628 · U.S. census
- Loos 4,216 · U.S. census
When the index is not enough
This page says where Longo 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.