Illinois Ornithological Society
- Information on field trips for birders, birdwatching, bird alerts and details from the Illinois Ornithological Records Committee.
- http://www.illinoisbirds.org/

TASH - Illinois Chapter
- Purpose of the organization is to help improve the quality of life and promote equality for disabled people. Page includes mission statement, board of directors and conference schedule.
- http://www.tash.org/chapters/illinois/

Rotary District 6460
- Serving West Central Illinois, including Springfield, Peoria and Edwardsville areas. Includes member clubs meeting locations and times, its international youth exchange program, and contact details.
- http://www.rotarydistrict6460.org/

Illinois District of Optimist International
- State district for Optimist Clubs, a public service organization. Includes events calendar, membership benefits, local clubs and youth clubs, newsletters, and contact details.
- http://www.illinoisoptimist.org/

Illinois Jaycees
- Leadership training through community service.
- http://www.iljaycees.org/

Volunteer Illinois
- Searchable database of volunteer opportunities throughout the state. Provided by the Community Volunteer Center, an outreach of Lincoln Land Community College in Springfield.
- http://www.volunteerillinois.org/

ACLU of Illinois
- Illinois affiliate of the American Civil Liberties Union.
- http://www.aclu-il.org/

Illinois 4-H Forestry Judging Contest
- Training and information for Illinois 4-H members (and their club leaders) who wish to compete in the contest.
- http://forestryjudging.nres.uiuc.edu