The Nicastro surname
In the 2010 U.S. Census, 2,144 people carried this name — #14,046 among all U.S. surnames, about 1 in every 137,000 people counted. That is up 2% from 2,107 in 2000.
What the name means
The meaning of the Nicastro surname
A surname transferred from the place name.
From Medieval Latin Neocastrum (“new camp”), from Byzantine Greek Νεόκαστρον (Neókastron, “new castle”), a compound of νέος (néos, “new”) + κάστρον (kástron, “fort, castle”).
From Wiktionary, the free dictionary (en.wiktionary.org) — entry «Nicastro» (Italian), 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 881 people named Nicastro 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
134 people named Nicastro live in Switzerland.
They live in 10 of Switzerland’s 26 cantons, most of all in Aargau.
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 69 people named Nicastro.
Most of them — 57 — were born outside France. Those born in France came from 7 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 Belgium’s population register
At least 45 people named Nicastro 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 Nicastro,
with a public archive behind them.
-
Gustavo Nicastro 1869–1940 · politician -
Sebastiano Nicastro 1880–1923 · teacher -
Claudio Nicastro 1913–1977 · actor -
Claudio Nicastro 1913–1977 · actor
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Claudio Nicastro 1930–1977 · actor
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Nicolás Nicastro 1856– · composer
Wikidata and Wikimedia Commons (CC0) · 10 lives in all are documented under this name.
Nearby in the index
Surnames next to Nicastro.
- Ngo 33,005 · U.S. census
- Nguon 443 · U.S. census
- Nguyen 437,645 · U.S. census
- Niang 888 · U.S. census
- Nicaise 154 · U.S. census
- Nicar 127 · U.S. census
- Niccolai 214 · U.S. census
- Nice 3,595 · U.S. census
- Nicholas 27,922 · U.S. census
- Nicholson 58,151 · U.S. census
- Nick 3,590 · U.S. census
- Nickel 8,292 · U.S. census
When the index is not enough
This page says where Nicastro 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.