The Ducasse surname
In the 2010 U.S. Census, 665 people carried this name — #34,149 among all U.S. surnames, about 1 in every 434,800 people counted. That is up 33% from 499 in 2000.
In France’s civil register
France’s register of deaths holds 2,682 people named Ducasse.
43 of them were born outside France. Those born in France came from 72 départements, most often Landes.
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 Argentina’s national register
At least 706 people named Ducasse 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.
Nearby in the index
Surnames next to Ducasse.
When the index is not enough
This page says where Ducasse 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.