While Chaldeans are believed to have immigrated to the United States as early as 1889, the first significant migration wave did not occur until around 1910, when Chaldeans began settling in metropolitan Detroit.At the time, Detroit was popular among a number of immigrant groups because of the growing automobile industry.
This division between the followers of Nestorius in the East and the Roman Church lasted until 1445, when some Chaldeans were received into the Roman Church by Pope Eugenius IV.
They were permitted to retain their historic rituals and the Chaldean/Aramaic language for mass and other ceremonies.
Searching for an appropriate name to call this new Catholic rite, the Pope focused on their historic homeland, which in ancient times had been the land of the Babylonians, Assyrians, and Chaldeans.
It was also the historic homeland of the prophet Abraham, who came from Ur, a city of the Chaldeans.
Hence, the Pope chose "Chaldean" as the name for the new Catholic rite.
Over 95 percent of Chaldeans in the Detroit community can trace their origin to a single town, Telkaif, which is one of several Christian towns in the northern Iraqi province of Mosul, near the ruins of the ancient city of Nineveh.
Some of the earliest members of Detroit's Chaldean American community recall hearing stories from their grandparents about the conversion of their town from Nestorianism.
This occurred in about 1830, when the town recognized the Roman Pontiff as the head of the Church.
Chaldean Americans are descendants of people from the northern Tigris-Euphrates Valley, presently located in the Middle Eastern nation of Iraq.
The majority of Chaldean Americans live in Detroit, Michigan, although there are also Chaldean Americans in Chicago, Illinois; El Cajon, San Jose, and Turlock, California; and Oaxaca, Mexico. According to statistical projections from previous data on the Chaldean American community, however, it is estimated that Chaldeans in the Detroit metropolitan area may number as many as 70,000 to 80,000; in California they are projected at 2,000 to 3,000 persons.
It is difficult to determine the exact number of Chaldeans in the United States because they are not represented as such in the U. Although Chaldean Americans constitute the bulk of Iraqi immigrants living in the United States, they represent less than 10 percent of the population of Iraq.