Maple Valley is a city located in Washington. With a 2020 population of 27,404, it is the 41st largest city in Washington and the 1393rd largest city in the United States. Maple Valley is currently growing at a rate of 0.53% annually and its population has increased by 20.81% since the most recent census, which recorded a population of 22,684 in 2010. Spanning over 6 miles, Maple Valley has a population density of 4,564 people per square mile.
The average household income in Maple Valley is $118,226 with a poverty rate of 4.50%. The median rental costs in recent years comes to $1,835 per month, and the median house value is $377,100. The median age in Maple Valley is 35.5 years, 35.4 years for males, and 35.5 years for females. For every 100 females there are 93.5 males.