Hayden Lake is a city in Kootenai County, Idaho, United States.

Located in the northern portion of the state, it is considered a suburb of the city of Coeur d'Alene.

The Purcell Lobe of the Cordilleran Ice Sheet flowed south from Canada, carving the basin of present-day Lake Pend Oreille and damming the Clark Fork river.

The impounded river repeatedly filled to form Glacial Lake Missoula and broke through the ice dam, resulting in massive floods that filled the Rathdrum Prairie area with sand, gravel, and boulders.

[5] Large eddy bars formed downstream from bedrock obstructions, thereby damming tributary valleys and creating lakes.

The first white man to visit the area was Father DeSmet while serving as a missionary to the Coeur d’Alene Indians.

[8] In 1907, the Hayden Lake Country Club became a gathering place for many area socialites, such as Bing Crosby.

[9] From the 1970s until 2001, the neo-Nazi Aryan Nations had its headquarters in a 20-acre (8.1 ha) compound in Kootenai County near Hayden Lake.

In September 2000, the Southern Poverty Law Center won a $6.3 million judgment against the Aryan Nations from an Idaho jury, who awarded punitive and compensatory damages to Victoria Keenan and her son, Jason, who were attacked by Aryan Nations guards in 1999.

[11] As a result of the judgment, Richard Butler turned the compound over to the Keenans, who then sold the property to a philanthropist who subsequently donated it to North Idaho College, which designated the land as a "peace park".