Washington, Nevada, Idaho and California border Oregon.
Idaho borders Washington and Oregon to the East.
north-washington east-idaho south-california,nevada
Oregon
Idaho to the east, and Oregon to the south
Washington borders Idaho to the east and and Oregon also borders Idaho to the east.
Wyoming
The state that border Washington (not Washington, DC) and Oregon to the east is the great state of Idaho.
Four States: * Washington * Idaho * Nevada and * California.
Idaho is bordered to the west by Washington and Oregon.
Washington, Idaho, Nevada, and California.
Oregon, Idaho and British Columbia , Canada