Grand Coulee is located in Washington. Grand Coulee, Washington 99133 has a population of 1,018. Grand Coulee 99133 is less family-centric than the surrounding county with 18% of the households containing married families with children. The county average for households married with children is 31%.
The median household wage in Grand Coulee, Washington 99133 is $43,942. The median household income for the surrounding county is $66,354 compared to the national median of $66,222. The median age of people living in Grand Coulee 99133 is 48.2 years.
The average high temperature in July is 87.01 degrees, with an average low temperature in January of 19.96 degrees. The average rainfall is approximately 10.52 inches per year, with inches of snow per year.