The Colaianni surname
In the 2010 U.S. Census, 433 people carried this name — #48,717 among all U.S. surnames, about 1 in every 666,700 people counted. That is down 7% from 464 in 2000.
In Argentina’s national register
At least 157 people named Colaianni 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 Switzerland’s population statistics
68 people named Colaianni live in Switzerland.
They live in 8 of Switzerland’s 26 cantons, most of all in Bern.
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.
In France’s civil register
France’s register of deaths holds 54 people named Colaianni.
Most of them — 31 — were born outside France. Those born in France came from 10 départements, most often Ardennes.
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 Belgium’s population register
At least 34 people named Colaianni 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 Namur.
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 Colaianni,
with a public archive behind them.
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Joseph V. Colaianni 1933–2018 · judge -
Agostino Colaianni 1751–1814 · Catholic priest
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Giuseppe Colaianni 1945– · amateur wrestler
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Nicola Colaianni 1946– · politician
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Biagio Colaianni 1957– · Catholic priest
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Giampiero Colaianni 1974– · archaeologist
Wikidata and Wikimedia Commons (CC0).
Nearby in the index
Surnames next to Colaianni.
- Coia 526 · U.S. census
- Coin 653 · U.S. census
- Coine 119 · U.S. census
- Col 231 · U.S. census
- Cola 1,509 · U.S. census
- Colace 139 · U.S. census
- Colak 195 · U.S. census
- Colangelo 3,307 · U.S. census
- Colantonio 653 · U.S. census
- Colas 1,323 · U.S. census
- Colbert 22,940 · U.S. census
- Cole 195,289 · U.S. census
When the index is not enough
This page says where Colaianni 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.