Founded in 1917, Valley County is one of 44 counties in the state of Idaho. Historically, Valley County was formed from Boise and Idaho Counties. The city of Cascade is the county seat. With FIPS code of 85, Valley County has a population of 12,241 and area of 3,733 square miles (9,668 km2).
List of all cities in Valley County, ID alphabetically
| City/Town | Postal Code | Area Code |
| Alpha, ID | 83611 | 208 |
| Burgdorf, ID | 83638 | 208 |
| Cascade, ID | 83611 | 208 |
| Donnelly, ID | 83615 | 208 |
| Lake Fork, ID | 83635 | 208 |
| Lardo, ID | 83638 | 208 |
| Mackey Bar, ID | 83611 | 208 |
| McCall, ID | 83635 | 208 |
| McCall, ID | 83638 | 208 |
| Roseberry, ID | 83615 | 208 |
| Stibnite, ID | 83677 | 208 |
| Tamarack, ID | 83615 | 208 |
| Warm Lake, ID | 83611 | 208 |
| Yellow Pine, ID | 83677 | 208 |