The Costantini surname
In the 2010 U.S. Census, 694 people carried this name — #32,994 among all U.S. surnames, about 1 in every 416,700 people counted. That is down 32% from 1,023 in 2000.
What the name means
The meaning of the Costantini surname
A surname transferred from the given name.
Patronymic from the personal name Costantino.
From Wiktionary, the free dictionary (en.wiktionary.org) — entry «Costantini» (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 1,790 people named Costantini 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 638 people named Costantini.
182 of them were born outside France. Those born in France came from 50 départements, most often Corsica.
Where it concentrates, on the mapWhere 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
363 people named Costantini live in Switzerland.
They live in 17 of Switzerland’s 26 cantons, most of all in Ticino.
Where it concentrates, on the mapWhere 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 Belgium’s population register
At least 36 people named Costantini 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 Limburg.
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.
In print
Costantini in American newspapers,
1904–1961.
Chronicling America, Library of Congress — digitised newspapers in the public domain · 594 pages in all carry the name.
Who carried it
People named Costantini,
with a public archive behind them.
-
Toldo Costantini 1576–1648 · poet -
Angelo Costantini 1650–1729 · actor -
Vincent-Marie Costantini 1751–1825 · military personnel -
Marco Costantini 1801–1900 · writer -
Berardo Costantini 1830–1903 · physician
Wikidata and Wikimedia Commons (CC0) · 177 lives in all are documented under this name.
Nearby in the index
Surnames next to Costantini.
- Cosse 369 · U.S. census
- Cossin 417 · U.S. census
- Cosson 334 · U.S. census
- Cossu 164 · U.S. census
- Costa 38,265 · U.S. census
- Costagliola 430 · U.S. census
- Costantino 3,388 · U.S. census
- Costanza 3,137 · U.S. census
- Costanzo 5,970 · U.S. census
- Coste 764 · U.S. census
- Costella 378 · U.S. census
- Coster 1,646 · U.S. census
When the index is not enough
This page says where Costantini 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.