| Capital: | Rock Island |
|---|---|
| Origen y Formación del condado: | Jo Daviess County |
| Población: | 147,546 habitantes |
| Área: | 427 sq mi |
| Localización del condado dentro de Illinois: |
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Localidades en Rock Island, Illinois
- Andalusia
- Andalusia Township Rock Island County
- Barstow
- Blackhawk Township Rock Island County
- Bowling Township Rock Island County
- Buffalo Prairie Township Rock Island County
- Canoe Creek Township Rock Island County
- Carbon Cliff
- Coal Valley
- Coal Valley Township Rock Island County
- Coe Township Rock Island County
- Cordova
- Cordova Township Rock Island County
- Coyne Center
- Drury Township Rock Island County
- East Moline
- Edgington Township Rock Island County
- Hampton
- Hampton Township Rock Island County
- Hillsdale
- Illinois City
- Milan
- Moline
- Moline Township Rock Island County
- Oak Grove
- Port Byron
- Port Byron Township Rock Island County
- Rapids City
- Reynolds
- Rock Island
- Rock Island Arsenal
- Rock Island Township Rock Island County
- Rural Township Rock Island County
- Silvis
- South Moline Township Rock Island County
- South Rock Island Township Rock Island County
- Taylor Ridge
- Zuma Township Rock Island County