Eagle, ID has a population of 22,711 and is the 1,914th largest city in the United States. The population density is 763 per sq mi which is 3897% higher than the Idaho average and 742% higher than the national average. The median age in Eagle is 45 which is approximately 26% higher than the Idaho average of 36. In Eagle, 71% of the population over 15 years of age are married, 96% speak English and 2% speak Spanish. 37% of Eagle residents were born in Idaho, 59% were born out of state, 1% were born outside of the United States and 3% were foreign born.