Plumas County Visitors Bureau
- Descriptions of recreation, events, communities and data on Plumas County.
- http://www.plumascounty.org/

Plumas County Fire Safe Council
- Board of directors, activities, fire forecast and tips from this organization.
- http://www.plumasfiresafe.org/

Indian Valley Chamber of Commerce
- Towns and history, recreation and cultural activities, and business listings.
- http://www.indianvalley.net/

Eastern Plumas Chamber of Commerce
- Visitors' information and business directory for Portola and the Sierra Valley.
- http://www.easternplumaschamber.com/

CERES - Plumas County
- An index to environmental information for the county. Extensive reference includes road, weather, and flood conditions, demographics, historical resources, maps.
- http://ceres.ca.gov/geo_area/counties/Plumas/