Information from: “North America” (7-41) . Victor Golla and Ives Goddard and Lyle Campbell and Marianne Mithun and Mauricio Mixco (2008) , Chris Moseley and Ron Asher · Routledge
20 percent certain, based on the evidence available
Partly mutually intelligible with Sauk-Fox but has been spoken since the earliest contact in the seventeenth century by a separate political group. There are estimated to be around 1,100 first-language speakers of Kickapoo, about 700 of them in Mexico, 400 in Oklahoma, and only a few in Kansas.
Now on reservations in Kansas and the Mexican state of Coahuila, and in communities near McLoud, Oklahoma, and Eagle Pass, Texas.
Information from: “Ethnologue: Languages of the World, 19th Edition (2016)” . Lewis, M. Paul, Gary F. Simons, and Charles D. Fennig · SIL International
40 percent certain, based on the evidence available