Winnebago County Extension Unit
- Provides practical, research-based information and programs to help individuals, families, farms, businesses and communities in Illinois.
- http://web.extension.uiuc.edu/winnebago/

Winnebago County Illinois
- Features directory of services, county and court administration information, and property tax inquiry.
- http://www.co.winnebago.il.us/

Winnebago County Health Department
- Services include disease prevention and control, and family planning. It is strictly confidential. Office located in Rockford.
- http://www.wchd.org/

Winnebago County Data
- Census information.
- http://www.ag.uiuc.edu/~lced/census/search1.cgi?icounty=Winnebago

Winnebago County Service Directory
- Departments, descriptions and contact information for many county services.
- http://www.comportone.com/cpo/govment/il-counties/winnebago/