Douglas County Profile
- Comprehensive government information including demographics, studies, and services. Provided by the Washington State Office of Financial Management.
- http://www.ofm.wa.gov/localdata/doug.asp

Butterflies of Douglas County, Washington
- List of butterfly species found in Douglas County, provided by the USGS Northern Prairie Wildlife Research Center.
- http://www.butterfliesandmoths.org/map?x=197&y=103&si=48

Chelan-Douglas Health District
- Comprehensive health information for people in Chelan and Douglas Counties. Includes information about outreach clinic schedules, local septic system experts, and Health Board contact information.
- http://www.cdhd.wa.gov/

Archives: Douglas County
- Guide to archive holdings for Douglas County government and municipalities. Washington State Archives, Central Regional Branch.
- http://www.cwu.edu/~archives/douglas.htm

Cemeteries of Douglas County
- Cemeteries and cemetery records to help trace genealogy in Douglas County, Washington.
- http://www.interment.net/us/wa/douglas.htm