Castle Rock is located in the County of Cowlitz. This city is nestled between the hills of Willapa and the western base of Mount St. Helens. The place is primarily known as the timber country. It is a part of the Metropolitan Statistical Area of Washington, Longview. Castle Rock has a total area of about 3.6 sq. kms. and is located at a height of about 60 ft. from the sea level. Local transport, education and other wood based industries are an important part of the local economy. Tourism is generally a seasonal affair and helps in the growth of the overal economy.