Coulee Dam is a city located in Washington. With a 2020 population of 1,074, it is the 199th largest city in Washington and the 10019th largest city in the United States. Coulee Dam is currently declining at a rate of -0.28% annually and its population has decreased by -2.19% since the most recent census, which recorded a population of 1,098 in 2010. Coulee Dam reached it's highest population of 1,099 in 2010. Spanning over 1 miles, Coulee Dam has a population density of 1,500 people per square mile.
The average household income in Coulee Dam is $68,465 with a poverty rate of 13.19%. The median rental costs in recent years comes to $753 per month, and the median house value is $153,800. The median age in Coulee Dam is 42.3 years, 42.1 years for males, and 43.5 years for females. For every 100 females there are 101.8 males.