| Capital: | Cambridge |
|---|---|
| Origen y Formación del condado: | Fulton County |
| Población: | 50,486 habitantes |
| Área: | 823 sq mi |
| Localización del condado dentro de Illinois: |
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Localidades en Henry, Illinois
- Alba Township Henry County
- Alpha
- Andover
- Andover Township Henry County
- Annawan
- Annawan Township Henry County
- Atkinson
- Atkinson Township Henry County
- Bishop Hill
- Burns Township Henry County
- Cambridge
- Cambridge Township Henry County
- Cleveland
- Clover Township Henry County
- Coal Valley
- Colona
- Colona Township Henry County
- Cornwall Township Henry County
- Edford Township Henry County
- Galva
- Galva Township Henry County
- Geneseo
- Geneseo Township Henry County
- Green Rock
- Hanna Township Henry County
- Hooppole
- Kewanee
- Kewanee Township Henry County
- Loraine Township Henry County
- Lynn Center
- Lynn Township Henry County
- Munson Township Henry County
- Opheim
- Orion
- Osco Township Henry County
- Oxford Township Henry County
- Phoenix Township Henry County
- Weller Township Henry County
- Western Township Henry County
- Wethersfield Township Henry County
- Woodhull
- Yorktown Township Henry County