The Rathdrum Prairie is a flat in the U.S. state of Idaho. The prairie contains the cities of Coeur d'Alene, Post Falls, Hayden, Rathdrum, State Line, and Huetter. The prairie also contains part of the Spokane Valley–Rathdrum Prairie Aquifer.
Location: Kootenai County, ID, United States
Floor elevation: 2,274 ft (693 m)
Population centers: Coeur d'Alene, Post Falls, Hayden, Rathdrum, State Line, Huetter
Borders on: Eightmile Prairie (North), Selkirk Range (Northwest and South), Lake Coeur d'Alene (Southeast), the Spokane Valley (west), Coeur d'Alene Mountains (Rocky Mountains); Hayden Lake (East)
Traversed by: Interstate 90
Rivers: Spokane River, Rathdrum Creek