Coulee City is a city located in Washington. With a 2020 population of 568, it is the 234th largest city in Washington and the 12773rd largest city in the United States. Coulee City is currently declining at a rate of -0.35% annually but its population has increased by 1.07% since the most recent census, which recorded a population of 562 in 2010. Coulee City reached it's highest population of 573 in 2014. Spanning over 1 miles, Coulee City has a population density of 615 people per square mile.
The average household income in Coulee City is $59,327 with a poverty rate of 7.87%. The median rental costs in recent years comes to $613 per month, and the median house value is $130,900. The median age in Coulee City is 39.4 years, 36.5 years for males, and 44.5 years for females. For every 100 females there are 123.4 males.