Coeur d'Alene, ID has a population of 47,842 and is the 865th largest city in the United States. The population density is 3,009 per sq mi which is 15672% higher than the Idaho average and 3222% higher than the national average. The median age in Coeur d'Alene is 36 which is approximately 2% higher than the Idaho average of 36. In Coeur d'Alene, 53% of the population over 15 years of age are married, 97% speak English and 1% speak Spanish. 34% of Coeur d'Alene residents were born in Idaho, 64% were born out of state, 1% were born outside of the United States and 2% were foreign born.