Six U.S. States That Border Idaho

Idaho shares borders with six states (and one Canadian province):

1. Washington – west
2. Oregon – west/southwest
3. Nevada – south
4. Utah – southeast
5. Wyoming – east
6. Montana – northeast

International border: British Columbia, Canada (north, 72 km / 45 mi).

Idaho's shape—long north-south panhandle + broad southern base—creates this unusually high neighbor count for a Rocky Mountain state.