Grangeville is a city located in Idaho County Idaho. It is also the county seat of Idaho County. With a 2020 population of 3,319, it is the 43rd largest city in Idaho and the 5924th largest city in the United States . Grangeville is currently growing at a rate of 1.25% annually and its population has increased by 5.67% since the most recent census, which recorded a population of 3,141 in 2010. Grangeville reached it's highest population of 3,666 in 1980. Spanning over 1 miles, Grangeville has a population density of 2,217 people per square mile.
The average household income in Grangeville is $50,391 with a poverty rate of 18.23%. The median rental costs in recent years comes to $687 per month, and the median house value is $139,100. The median age in Grangeville is 33 years, 32.4 years for males, and 41.1 years for females.