The Castronovo surname
In the 2010 U.S. Census, 629 people carried this name — #35,721 among all U.S. surnames, about 1 in every 476,200 people counted. That is up 6% from 594 in 2000.
In Belgium’s population register
At least 243 people named Castronovo 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 Liège.
Where it concentrates, on the mapWhere they live today
Statbel (Statistics Belgium), family names of the population by municipality, 1 January 2026 — CC BY 4.0.
In Argentina’s national register
At least 239 people named Castronovo 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 106 people named Castronovo.
Most of them — 82 — were born outside France. Those born in France came from 12 départements, most often Bouches-du-Rhône.
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
32 people named Castronovo live in Switzerland.
They live in 5 of Switzerland’s 26 cantons, most of all in Ticino.
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 Castronovo,
with a public archive behind them.
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Giuseppe Castronovo 1814–1893 · Catholic priest -
Raúl Castronovo 1949–2026 · association football player -
Ettore Castronovo 1894–1954
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Ettore Castronovo 1894–1954
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Valerio Castronovo 1935–2023 · historian
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Rosario Castronovo 1953– · association football player
Wikidata and Wikimedia Commons (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Castronovo.
- Castille 2,821 · U.S. census
- Castillo 230,420 · U.S. census
- Castillon 1,657 · U.S. census
- Castin 203 · U.S. census
- Castor 6,063 · U.S. census
- Castro 184,134 · U.S. census
- Casula 174 · U.S. census
- Cat 182 · U.S. census
- Catala 869 · U.S. census
- Catalan 6,899 · U.S. census
- Catalano 9,973 · U.S. census
- Cataldi 922 · U.S. census
When the index is not enough
This page says where Castronovo 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.