Mattawa is a city located in Washington. With a 2020 population of 4,672, it is the 125th largest city in Washington and the 4953rd largest city in the United States. Mattawa is currently growing at a rate of 0.69% annually and its population has increased by 5.30% since the most recent census, which recorded a population of 4,437 in 2010. Spanning over 1 miles, Mattawa has a population density of 5,066 people per square mile.
The average household income in Mattawa is $58,221 with a poverty rate of 12.20%. The median rental costs in recent years comes to $804 per month, and the median house value is $102,900. The median age in Mattawa is 23.3 years, 24.3 years for males, and 23 years for females. For every 100 females there are 120.4 males.