48 states touch at least one other state. Some states of the 48 touch at least 3 other states. Only Alaska and Hawaii don't touch another state.
48 states touch at least one other state ... they are called the 48 contiguous states. Only Alaska and Hawaii stand alone.
The border of a state or province has to touch something. If you are referring to the United States, only Hawaii does not border any other sovereign land - but it does touch the Pacific Ocean.
The Canadian province of Quebec is to the northwest. Maine is the northernmost state in New England and the largest, accounting for almost half of the region's entire land area. Maine is the only state to border exactly one other American state (New Hampshire).
Florida is the only state to touch both the Atlantic and the Gulf.
Hawaii is the newest of the 50 U.S. states and is the only U.S. state made up entirely of islands. Alaska is the largest state of the United States by area. These states don't touch or borders the contiental states.
Only one other state? Maine. No other states? Alaska and Hawaii.
Washington borders only 2 other states
Maine
It is the only state in the US to border on only one other state. All other states border on no others (Alaska and Hawaii) or on at least two other states.
Illinois.
Alaska and Hawaii border no other states. If you're wondering about the contiguous United States, Maine is the only state that borders just one other state; New Hampshire.