Jefferson County Home Builders Association
- The trade association for contractors and others in the building trades.
- http://www.jeffcohomebuilders.com/

Quilcene/Brinnon Chamber of Commerce
- Located on the Hood Canal, famous for its calm waters, plentiful shrimp and colorful sunsets.
- http://www.emeraldtowns.com/

Economic Development Council (EDC) of Jefferson County
- The EDC is a private, non-profit corporation whose mission is to assist businesses to grow in Jefferson County.
- http://www.edcjc.com/

Mountain Propane
- Provides delivered propane gas. Also offers fireplaces and inserts, stoves, wall heaters, BBQs, water heaters, cylinders and asessories.
- http://www.mountainpropane.com/

OlympusNet
- Internet service provider, servicing dialup connections to the Port Townsend, Jefferson County, Sequim, and Port Angeles local calling areas.
- http://www.olympus.net/