Castle Rock Real EstateThe median home value in Castle Rock, WA is $393,500. This is higher than the county median home value of $271,900. The national median home value is $219,700. The average price of homes sold in Castle Rock, WA is $393,500. Approximately 61.87% of Castle Rock homes are owned, compared to 34.92% rented, while 3.21% are vacant. Castle Rock 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 Castle Rock real estate agent to arrange a tour today! Castle Rock, Washington has a population of 2,899. Castle Rock is less family-centric than the surrounding county with 19.12% of the households containing married families with children. The county average for households married with children is 28.03%. The median household income in Castle Rock, Washington is $41,346. The median household income for the surrounding county is $49,804 compared to the national median of $57,652. The median age of people living in Castle Rock is 37 years. Castle Rock WeatherThe average high temperature in July is 77.8 degrees, with an average low temperature in January of 35.3 degrees. The average rainfall is approximately 61.2 inches per year, with 0.9 inches of snow per year. Nearby Homes for SaleOther Properties for Sale |