Mattawa is located in Washington. Mattawa, Washington has a population of 4,841. Mattawa is more family-centric than the surrounding county with 73% households with children. The county percentage for households with children is 35%.
The median household income in Mattawa, Washington is $50,211. The median household income for the surrounding county is $59,938 compared to the national median of $66,222. The median age of people living in Mattawa is 28.7 years.
The average high temperature in July is 90.99 degrees, with an average low temperature in January of 24.31 degrees. The annual precipitation is 7.88.