| Capital: | Monticello |
|---|---|
| Origen y Formación del condado: | DeWitt and Macon County |
| Población: | 16,729 habitantes |
| Área: | 440 sq mi |
| Localización del condado dentro de Illinois: |
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Localidades en Piatt, Illinois
- Atwood
- Bement
- Bement Township Piatt County
- Blue Ridge Township Piatt County
- Cerro Gordo
- Cerro Gordo Township Piatt County
- Cisco
- De Land
- Goose Creek Township Piatt County
- Hammond
- La Place
- Mansfield
- Milmine
- Monticello
- Monticello Township Piatt County
- Sangamon Township Piatt County
- Unity Township Piatt County
- White Heath
- Willow Branch Township Piatt County