Romani Americans are people in the United States whose ancestors once came from India in Ancient time's. They came to the United States via Eastern Europe at 19th century - 20th century. It is estimated that there are one million Romani people in the United States, occasionally known as American Gypsies. Though the Romani population in the United States has largely assimilated into American society, the largest concentrations are in Southern California, the Pacific Northwest, Texas and the Northeast as well as in cities such as Chicago and St. Louis.