Castle Rock Fire and Ambulance
- Applications, information and links.
- http://www.cowlitzonline.com/crfire.htm

Castle Rock Local News: Topix
- Local, regional, and statewide news collected from diverse sources on the web.
- http://www.topix.com/city/castle-rock-wa

Mt. St. Helen's Motorcycle Club
- Organizes off-road motorcycle racing events. Provides directions, events schedule, history and photographs.
- http://www.mshmc.org/

City of Castle Rock
- Offers information about city hall, government, and recreation.
- http://ci.castle-rock.wa.us/