Doon is a city located in Lyon County Iowa. With a 2020 population of 601, it is the 406th largest city in Iowa and the 12524th largest city in the United States . Doon is currently declining at a rate of 0.00% annually and its population has increased by 4.16% since the most recent census, which recorded a population of 577 in 2010. Doon reached it's highest population of in . Spanning over 1 miles, Doon has a population density of 930 people per square mile.
The average household income in Doon is $64,701 with a poverty rate of 7.10%. The median rental costs in recent years comes to $653 per month, and the median house value is $122,200. The median age in Doon is 32.3 years, 29.2 years for males, and 36.5 years for females.