Grangeville, ID has a population of 3,153 and is the 8,561st largest city in the United States. The population density is 2,117 per sq mi which is 10995% higher than the Idaho average and 2236% higher than the national average. The median age in Grangeville is 42 which is approximately 17% higher than the Idaho average of 36. In Grangeville, 55% of the population over 15 years of age are married, 95% speak English and 3% speak Spanish. 49% of Grangeville residents were born in Idaho, 49% were born out of state, 0% were born outside of the United States and 1% were foreign born.