Which U.S. state borders only one other state?

Geography By 1 min read

Quick answer

Maine is the only U.S. state that borders exactly one other state: New Hampshire, to the west. The rest of Maine is bordered by the Atlantic Ocean and the Canadian provinces of Quebec and New Brunswick. Alaska and Hawaii border no other states at all.

Maine’s neighbors

DirectionNeighbor
WestNew Hampshire (the only US state)
NorthwestQuebec, Canada
North and eastNew Brunswick, Canada
South and eastAtlantic Ocean, Gulf of Maine

Maine is also the only state whose name has one syllable; see which US state has a one-syllable name.

States with no state neighbors

States with the most neighbors

StateNumber of bordering states
Tennessee8
Missouri8
Kentucky7
Colorado7 (counting the Four Corners touch with Arizona)

Tennessee and Missouri border each other, and both also touch Kentucky and Arkansas.

Maine facts

  • Maine lands the large majority of America’s lobster catch.
  • It’s the easternmost state; some of its coast sees the first sunrise in the US for part of the year.
  • About 89% of Maine is covered by forest, the highest share of any state.
  • Its capital is Augusta; its largest city is Portland.

The Four Corners

Colorado, Utah, Arizona and New Mexico meet at a single point, the only place in the US where four states touch. For America’s middle, see where the geographic center of the US is.

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