Hayden Lake, ID has a population of 731 and is the 17,193rd largest city in the United States. The population density is 1,196 per sq mi which is 6170% higher than the Idaho average and 1220% higher than the national average. The median age in Hayden Lake is 54 which is approximately 50% higher than the Idaho average of 36. In Hayden Lake, 86% of the population over 15 years of age are married, 97% speak English and 2% speak Spanish. 22% of Hayden Lake residents were born in Idaho, 76% were born out of state, 1% were born outside of the United States and 1% were foreign born.