Coeur d'Alene is a city located in Kootenai County, Idaho. Coeur d'Alene has a 2026 population of 57,355. It is also the county seat of Kootenai County. Coeur d'Alene is currently growing at a rate of 0.65% annually and its population has increased by 4.37% since the most recent census, which recorded a population of 54,954 in 2020.