IROQUOIS CONFEDERACY OVERVIEW The Iroquois Confederacy, an association of six linguistically related tribes in the northeastern woodlands, was a sophisticated society of some 5,500 people when the first white explorers encountered it at the beginning of the seventeenth century. The 1990 Census counted 49,038 Iroquois living in the United States, making them the country's eighth most populous Native American group. Although Iroquoian tribes own seven reservations in New York state and one in Wisconsin