which us state borders only one other state

The only U.S. state that borders exactly one other U.S. state is Maine.

Quick Scoop

• Maine’s only land border with another U.S. state is with New Hampshire.

• It also borders Canada (Quebec and New Brunswick) and the Atlantic Ocean, but no additional U.S. states.

• No other U.S. state has just a single U.S. state neighbor; several have two, but Maine is unique with one.

Fun geography note

Because Maine sits in the far northeast corner of the contiguous U.S., it “sticks out” from the rest of New England, which is why it touches only New Hampshire to the west. This geographical position is what makes it the answer to trivia questions like “which US state borders only one other state.”

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