Cool Valley is a city located in Missouri. With a 2020 population of 1,146, it is the 324th largest city in Missouri and the 9780th largest city in the United States. Cool Valley is currently declining at a rate of -0.61% annually and its population has decreased by -4.18% since the most recent census, which recorded a population of 1,196 in 2010. Cool Valley reached it's highest population of 1,193 in 2010. Spanning over 0 miles, Cool Valley has a population density of 2,497 people per square mile.
The average household income in Cool Valley is $50,922 with a poverty rate of 23.20%. The median rental costs in recent years comes to $1,120 per month, and the median house value is $69,300. The median age in Cool Valley is 40.1 years, 43.5 years for males, and 39.7 years for females. For every 100 females there are 79.6 males.