Mattawa is located in Washington. Mattawa, Washington 99349has a population of 3,529. Mattawa 99349 is more family-centric than the surrounding county with 39.03% of the households containing married families with children. The county average for households married with children is 31.84%.
The median household income in Mattawa, Washington 99349 is $45,938. The median household income for the surrounding county is $63,566 compared to the national median of $69,021. The median age of people living in Mattawa 99349 is 23.6 years.
The average high temperature in July is 91.1 degrees, with an average low temperature in January of 27.1 degrees. The average rainfall is approximately 7.5 inches per year, with 9.1 inches of snow per year.
