None. Hawaii is in the middle of the ocean by itself and Alaska shares a border with Canada.
There are 2 US states that have no common border with any other state. These are Alaska and Hawaii. The remaining states are collectively considered the 48 "lower" or "contiguous" states. (Alaska would be considered the 49th continental state.)Hawaii is an island, and Alaska has a land border only with Canada, which is a different country.
Two: Alaska and Hawaii.
Five states border the Pacific Ocean: Hawaii Alaska Washington Oregon California
Every state borders someone, besides Alaska and Hawaii.
California, Oregon, Washington, Alaska, Hawaii
Two states border no other states: Alaska and Hawaii.
Alaska, Hawaii, California, Oregon and Washington state.
Maine; Alaska and Hawaii border none. Alaska and Hawaii border none. Maine borders one state - New Hampshire.
Five U.S. states border the Pacific Ocean. California, Oregon, Washington and Alaska border the Pacific Ocean. Hawaii is located in the Pacific Ocean.
There are two: Hawaii and Alaska. Neither shares a land border with any other US state.
In 1952 there were 48 states in the US. They are sometimes referred to now as the 'lower 48', if the matter at hand is relevant only to the contiguous states below Canada. Like Hawaii, Alaska does not border any of the other states. The last two states to join the union were Alaska and Hawaii, both of which joined in 1959.