The USA has the 8th longest coastline in the world at 19,924 km.
62% of the perimeter of the USA is coastline. The remainder is land borders with other countries which amounts to 12,219 kms. The USA's coastline is made up of beaches, cliffs, mangroves, and urban plus developed areas.
The following list consists of maritime claims in nautical miles.
The USA's coastline resides in the following oceans and seas: