| Language |
Language Family |
Max. Estimated |
| Arapaho | Algonkian |
100 |
| Caddo | Caddoan |
25 |
| Cherokee | Iroquoian |
9,000 |
| Cheyenne | Algonkian |
400 |
| Chickasaw | Muskogean |
600 |
| Chiricahua Apache | Na-Dene |
1 |
| Choctaw | Muskogee |
4,000 |
| Comanche | Uto-Aztecan |
100 |
| Delaware (Lenape) | Algonkian |
1 |
| Euchee | (Isolate) |
15 |
| Iowa | Siouan |
30 |
| Kickapoo | Algonkian |
400 |
| Kiowa | Tanoan |
400 |
| Mesquakie (Sauk and Fox) | Algonkian |
10 |
| Muskogee (Creek and Seminole) | Muskogean |
6,000 |
| Osage | Siouan |
5-10 |
| Otoe | Siouan |
4 |
| Ottawa | Algonkian |
3 |
| Pawnee | Caddoan |
7 |
| Plains Apache | Na-Dene |
3 |
| Ponca | Siouan |
35 |
| Potawatomi | Algonkian |
20 |
| Seneca | Iroquoian |
10 |
| Shawnee | Algonkian |
200-800 |
| Wichita | Caddoan |
5 |
| Kaw (Kansa) | Siouan |
| Miami | Algonkian |
| Wyandotte | Iroquoian |