Mitchigamea or Michigamea or Michigamie were a tribe in the Illinois Confederation. Not much is known about them and their origin is uncertain. Originally they were said to be from Lake Michigan, perhaps the Chicago area. Mitchie Precinct, Monroe County in Southwestern Illinois takes its name from their transient presence nearby, north of the French Fort de Chartres in the American Bottom along the Mississippi. One of their villages in the American Bottom, inhabited from 1730 until 1752, is one of the region's premier archaeological sites; it is known as the "Kolmer Site".
The Jesuit Relations say: "At 5 miles from the village, I found the Tamaroa, who have taken up their winter quarters in a fine Bay, where they await the Mitchigamea, -- who are to come more than 60 leagues to winter there, and to form but one village with them."