Jefferson County School District 509J
- Covers K-12 schools in the county. Includes a calendar, departments, school profiles, parent/student information, board members and employee information.
- http://www.jcsd.k12.or.us

Jefferson County
- Official government site. Details of administration, fairgrounds, law enforcement, public health and veteran's services.
- http://www.co.jefferson.or.us/

Jefferson County Chamber of Commerce
- Includes directory and links to area government, schools, businesses, community events, guide for tourists, and relocation information.
- http://www.madraschamber.com

Jefferson County, Oregon Genealogy
- Researcher resources including queries, cemetery lists, and general county reference sources.
- http://www.rootsweb.com/~orjeffer/