Kamiah, ID has a population of 1,255 and is the 13,759th largest city in the United States. The population density is 1,143 per sq mi which is 5891% higher than the Idaho average and 1162% higher than the national average. The median age in Kamiah is 50 which is approximately 39% higher than the Idaho average of 36. In Kamiah, 59% of the population over 15 years of age are married, 97% speak English and 1% speak Spanish. 47% of Kamiah residents were born in Idaho, 49% were born out of state, 0% were born outside of the United States and 3% were foreign born.