Crystal Mountain Real EstateCrystal Mountain real estate listings include condos, townhomes, and single family homes for sale. Commercial properties are also available. If you see a property you’re interested in, contact a Crystal Mountain real estate agent to arrange a tour today! Crystal Mountain, Washington has a population of 5,835. The median household income in Crystal Mountain, Washington is $55,082. The median household income for the surrounding county is $83,571 compared to the national median of $57,652. The median age of people living in Crystal Mountain is 41.2 years. Crystal Mountain WeatherThe average high temperature in July is 73 degrees, with an average low temperature in January of 33.2 degrees. The average rainfall is approximately 71.7 inches per year, with 5 inches of snow per year. Nearby Homes for Sale |