Washington is a city located in Washington County Kansas. It is also the county seat of Washington County. With a 2020 population of 1,042, it is the 185th largest city in Kansas and the 10143rd largest city in the United States . Washington is currently declining at a rate of -0.86% annually and its population has decreased by -7.87% since the most recent census, which recorded a population of 1,131 in 2010. Washington reached it's highest population of 1,140 in 2011. Spanning over 1 miles, Washington has a population density of 1,077 people per square mile.
The average household income in Washington is $54,596 with a poverty rate of 8.55%. The median rental costs in recent years comes to $433 per month, and the median house value is $72,100. The median age in Washington is 44.9 years, 47.5 years for males, and 43.6 years for females.