Founded in 1913, Power County is one of 44 counties in the state of Idaho. Historically, Power County was formed from Bingham, Blaine, and Oneida Counties. The city of American Falls is the county seat. With FIPS code of 77, Power County has a population of 7,950 and area of 1,406 square miles (3,642 km2).
List of all cities in Power County, ID alphabetically
| City/Town | Postal Code | Area Code |
| Am Falls, ID | 83211 | 208 |
| American Falls, ID | 83211 | 208 |
| Arbon, ID | 83212 | 208 |
| Heglar, ID | 83211 | 208 |
| Neeley, ID | 83211 | 208 |
| Raft River, ID | 83211 | 208 |
| Rockland, ID | 83271 | 208 |
| Roy, ID | 83271 | 208 |