Baja California is the Mexican state that completely borders the southern US. but technically Arizona would border the southern California, in US states.
Oregon.
The state of Oregon is the only thing bordering California to the north.
prairie du chien
What state borders to the north of where? There is not enough information.
what state borders montana to the north
No state. Canada borders Idaho to the north.
The US state which borders North Dakota on the west is Montana.
Oregon borders to the north and Washington is above that.
Tennessee borders Mississippi to the north.
Arkansas borders Louisiana to the north.
California
the State of Baja California Norte, Mexico.