Kuna, ID has a population of 17,015 and is the 2,520th largest city in the United States. The population density is 904 per sq mi which is 4639% higher than the Idaho average and 898% higher than the national average. The median age in Kuna is 31 which is approximately 14% lower than the Idaho average of 36. In Kuna, 63% of the population over 15 years of age are married, 95% speak English and 3% speak Spanish. 56% of Kuna residents were born in Idaho, 39% were born out of state, 3% were born outside of the United States and 3% were foreign born.