The Mazzocco surname
In the 2010 U.S. Census, 594 people carried this name — #37,492 among all U.S. surnames, about 1 in every 500,000 people counted. That is up 4% from 571 in 2000.
In France’s civil register
France’s register of deaths holds 114 people named Mazzocco.
51 of them were born outside France. Those born in France came from 21 départements, most often Paris.
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 Argentina’s national register
At least 62 people named Mazzocco 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.
Too few records to say where it concentrates region by region — these are plain counts, not shares.
Where 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
40 people named Mazzocco live in Switzerland.
They live in 6 of Switzerland’s 26 cantons, most of all in Zurich.
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 Mazzocco,
with a public archive behind them.
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Guido Maria Mazzocco 1883–1968 · Catholic priest
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Guido Maria Mazzocco 1883–1968 · Catholic priest
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Salvatore Mazzocco 1915–1976 · composer
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Salvatore Mazzocco 1915–1976 · composer
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Salvatore Mazzocco 1920–1976 · composer
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Salvatore Mazzocco 1920–1976 · composer
Wikidata (CC0).
Nearby in the index
Surnames next to Mazzocco.
- Mazzeo 2,284 · U.S. census
- Mazzetti 405 · U.S. census
- Mazzi 264 · U.S. census
- Mazzilli 427 · U.S. census
- Mazzini 276 · U.S. census
- Mazzocchi 487 · U.S. census
- Mazzola 3,885 · U.S. census
- Mazzoleni 138 · U.S. census
- Mazzoli 387 · U.S. census
- Mazzolini 222 · U.S. census
- Mazzone 2,264 · U.S. census
- Mazzoni 1,141 · U.S. census
When the index is not enough
This page says where Mazzocco 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.