The state closest to Russia is Alaska. Located in the far northwest region of the United States, Alaska shares a maritime border with Russia across the Bering Strait. The distance between the two countries narrows significantly at this point, with the Diomede Islands located in the strait, where one island belongs to the USA and the other to Russia.
Alaska’s unique geographical position means that while it is part of the United States, it is also the state with the nearest proximity to Russia. The two countries are only about 2.4 miles apart at their closest point, making this distance notably shorter compared to any of the other U.S. states.