What do the members of this tribe, for which this 20,000 people (as of 2010) Kansas county is named after, call themselves?
Pottawatomie County, Kansas:  As of the 2010 census, the county population was 21,604. Pottawatomie County, Kansas:  The county takes its name from the Potawatomi tribe of Native Americans. Potawatomi:  The Potawatomi called themselves Neshnabé, a cognate of the word "Anishinaabe".
i don't know