The Chewerean tribes are probably descendant from the prehistoric Oneota, and appear to have been interconnected. At the time of contact with European explorers, their range covered most of Iowa. The Ho-Chunk ranged primarily east of the Mississippi in southern Wisconsin, the Ioway/Baxoje ranged in northern Iowa, the Otoe in central and southern Iowa, and the Missouria in far southern Iowa.
Dakotan-Siouan speakers from the prehistoric period
These may be descendants of Late Prehistoric Central Plains Tradition cultures that lived in southwest Iowa, especially around the Glenwood area. The Pawnee (Panis) are shown in southwest Iowa in a 1798 map, although they ranged primarily to the west.
Algonquian speakers from the early historical period
The encroachment of Europeans and long-term conflict among Algonquian and Iroquian tribes in the east pushed many eastern tribes into the Midwest. The Meskwaki have maintained a presence in Iowa, even after official removal in 1846, ultimately establishing a recognized Settlement.
Iroquoian speakers from the early historical period