The Political Graveyard: Delaware County, Oklahoma
- Database provides political history, cemetery locations, and brief biographies of politicians who were born or lived in the county.
- http://politicalgraveyard.com/geo/OK/DE.html

Delaware County, Oklahoma
- Part of the OKGenWeb and US GenWeb Project. Includes surnames, queries, vital records, lookups, photographs, maps and other resources for genealogy researchers.
- http://www.rootsweb.com/~okdelawa/

Delaware County Clerk
- Provides information about meeting agendas, minutes, fee schedule and duties. Includes a virtual tour of the office. Located in Jay.
- http://www.delawareclerk.org/

Delaware County OSU Extension Center
- Provides educational programs in the areas of agriculture, family and consumer sciences, 4-H youth development and rural development. Includes calendar of events and office hours.
- http://www.delawarecountyext.com/

Delaware County Demographics
- Provides report from the U.S. Bureau of the Census, Census 2000. [PDF file]
- http://staging.okcommerce.gov/test1/dmdocuments/Delaware_County_Demographics_061004300.pdf