Elk River is a city located in Clearwater County Idaho. With a 2020 population of 120, it is the 183rd largest city in Idaho and the 17981st largest city in the United States . Elk River is currently declining at a rate of -0.83% annually and its population has decreased by -4.00% since the most recent census, which recorded a population of 125 in 2010. Elk River reached it's highest population of 124 in 2010. Spanning over 0 miles, Elk River has a population density of 827 people per square mile.
The average household income in Elk River is $47,274 with a poverty rate of 18.75%. The median rental costs in recent years comes to - per month, and the median house value is $106,000. The median age in Elk River is 63 years, 62.5 years for males, and 64.2 years for females.