Castaldi surname: U.S. census count, rank and records | FamilyCrests

The Castaldi surname

In the 2010 U.S. Census, 809 people carried this name — #29,261 among all U.S. surnames, about 1 in every 370,400 people counted. That is down 12% from 923 in 2000.

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In Argentina’s national register

At least 204 people named Castaldi 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 map

Where they live today

Buenos Aires Province 90
Córdoba 40
Santa Fe 40
City of Buenos Aires 22
Río Negro 12

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 161 people named Castaldi.

73 of them were born outside France. Those born in France came from 16 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

Born outside France 73
Bouches-du-Rhône 40
Rhône 10
Pas-de-Calais 8
Paris 5
Loire 4
Isère 4
Hauts-de-Seine 3
Gironde 2

Fichier des personnes décédées, INSEE — Licence Ouverte 2.0 · deaths recorded in France since 1970, by place of birth.

In Switzerland’s population statistics

42 people named Castaldi live in Switzerland.

They live in 9 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

Ticino 8
Fribourg 6
Geneva 6
Jura 5
Vaud 4
Zurich 4
Solothurn 3
Schwyz 3

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 Castaldi,
with a public archive behind them.

  • Panfilo Castaldi
    Panfilo Castaldi 1430–1487 · physician
  • Alfonso Castaldi
    Alfonso Castaldi 1874–1942 · composer
  • Ristoro Castaldi d. 1584 · jurist
  • Gerolamo Castaldi d. 1521 · Catholic priest
  • Angelo Castaldi 1450–1508 · Catholic priest
  • Bellerofonte Castaldi 1580–1649 · composer

Wikidata and Wikimedia Commons (CC0) · 10 lives in all are documented under this name.

Nearby in the index

Surnames next to Castaldi.

When the index is not enough

This page says where Castaldi 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.

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