Washington state, Idaho, Montana, North Dakota, Minnesota, New York, Vermont, New Hampshire, Alaska and Maine all have land border with Another Country
Canada or Mexico
The war with Mexico changed the US border and land holdings significantly. The US was advantaged as it acquired New Mexico to be part of United States.
The United States of America has two international land borders; one with Canada to the north (US-Canadian Border) and another with Mexico to the south (US-Mexico Border). Also the US.Federal government considers that a border exsists between the United States and Russia,Cuba and the Bahamas.Canada and Mexico
Mexico and Canada.
California, Arizona, New Mexico, and Texas are the US states on the border with Mexico.
US states that border Mexico, from west to east:CaliforniaArizonaNew MexicoTexasThe only US state that borders the Caribbean Sea is Florida, but it doesn't border Mexico.
Canada and Mexico border the United States.
Two out of fifty states do not border any other states. That means 4% of states do not border another state. However, in terms of land area, 18% of the US does not border any other state due to the size of Alaska.
The US States that border the Gulf of Mexico are: Florida Alabama Mississippi Louisiana Texas
Five US States border the Gulf of Mexico, meaning that 45 do not.
The United States of America has two international land borders; one with Canada to the north (US-Canadian Border) and another with Mexico to the south (US-Mexico Border).Also the US Federal government considers that an "invisible non-land" border exists between the United States and (1) Russia (2) Cuba and (3) the Bahamas. However this is debatable as borders are traditionally defined by rivers, lakes or land divisions; not large bodies of water like seas or oceans.
Canada & Mexico, which are countries, not states.