Juliaetta, ID has a population of 602 and is the 18,417th largest city in the United States. The population density is 863 per sq mi which is 4421% higher than the Idaho average and 852% higher than the national average. The median age in Juliaetta is 43 which is approximately 19% higher than the Idaho average of 36. In Juliaetta, 57% of the population over 15 years of age are married, 93% speak English and 2% speak Spanish. 60% of Juliaetta residents were born in Idaho, 39% were born out of state, 0% were born outside of the United States and 0% were foreign born.