Elk River is a city located in Idaho. With a 2020 population of 123, it is the 181st largest city in Idaho and the 17925th largest city in the United States. Elk River is currently declining at a rate of 0.00% annually and its population has decreased by -1.60% 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 848 people per square mile.
The average household income in Elk River is $44,589 with a poverty rate of 18.52%. The median rental costs in recent years comes to - per month, and the median house value is $85,000. The median age in Elk River is 64.2 years, 67.1 years for males, and 63 years for females. For every 100 females there are 104.5 males.