Founded in 1864, Boise County is one of 44 counties in the state of Idaho. The city of Idaho City is the county seat. With FIPS code of 15, Boise County has a population of 8,094 and area of 1,902 square miles (4,926 km2).
List of all cities in Boise County, ID alphabetically
| City/Town | Postal Code | Area Code |
| Banks, ID | 83602 | 208 |
| Centerville, ID | 83631 | 208 |
| Crouch, ID | 83622 | 208 |
| Garden Valley, ID | 83622 | 208 |
| Gardena, ID | 83629 | 208 |
| Horseshoe Bend, ID | 83629 | 208 |
| Idaho City, ID | 83631 | 208 |
| Lowman, ID | 83637 | 208 |
| New Centerville, ID | 83631 | 208 |
| Pioneerville, ID | 83631 | 208 |
| Placerville, ID | 83666 | 208 |
| Silver Creek Plunge, ID | 83622 | 208 |
| Star Ranch, ID | 83631 | 208 |
| Steirman, ID | 83631 | 208 |