No. Washington, Idaho, Montana, North Dakota etc. are.
60 degrees north latitude
Only Pennsylvania.
The U.S. President who based his campaign slogan on the Oregon boundary dispute with Britain was James K. Polk. His campaign slogan was "Fifty-four Forty or Fight!", which referred to the latitude line of 54°40' north as the desired northern boundary of the Oregon Territory, extending all the way to the southernmost tip of Alaska.
The 42° N latitude creates Oregon's southern border. The 45° N latitude runs just a little north of the state capitol of Salem Oregon. The 46° 18' N latitude creates Oregon's most northern border.
washington, idaho, montana, north dakota, and minnesota
The border between Nebraska and Kansas is roughly defined by the 40th parallel north latitude. This line marks the northern boundary of Kansas and the southern boundary of Nebraska, extending horizontally across the two states.
No line of latitude is a north/south line. A move to the north or south is a change of latitude.
The North Tropic Sun line is the Tropic of Cancer. The Tropic of Cancer is a line of latitude circling the Earth at approximately 23.5 degrees North of the equator. It is the Northern boundary of the tropics.
Salem, Oregon is at 44 degrees 56 minutes north, 123 degrees 02 minutes west.
The Mason-Dixon Line, located at approximately 39 degrees latitude, became the northern boundary of slavery and its territories in pre-Civil War America. This line separated free states in the North from slave states in the South.
The most northern 'line' of latitude is really a point. 90 degrees latitude north is the north pole.
polks supporters yelled this out to show that they wanted all oregon to the line of 54 40' north latitude.