The Costi surname
In the 2010 U.S. Census, 132 people carried this name — #129,047 among all U.S. surnames, about 1 in every 2,500,000 people counted. That is down 6% from 140 in 2000.
In France’s civil register
France’s register of deaths holds 108 people named Costi.
31 of them were born outside France. Those born in France came from 15 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 Argentina’s national register
At least 79 people named Costi 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
34 people named Costi 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 Costi,
with a public archive behind them.
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Silvano Costi 1927–1993 · politician
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Silvano Costi 1927–1993 · politician
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Renzo Costi 1937– · jurist
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Robinio Costi 1943– · politician
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Cozi Costi 1953– · composer
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Rochelle Costi 1961–2022 · photographer
Wikidata (CC0).
Nearby in the index
Surnames next to Costi.
- 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
- Costes 256 · U.S. census
- Coston 4,969 · U.S. census
- Cot 267 · U.S. census
- Cote 21,446 · U.S. census
- Coto 2,814 · U.S. census
- Coton 174 · U.S. census
- Cotta 1,129 · U.S. census
When the index is not enough
This page says where Costi 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.