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Idaho Constitution
The Idaho Constitution is updated to the website July 1 following the legislative session.
CONSTITUTION OF THE STATE OF IDAHO
ARTICLE XVII STATE BOUNDARIES
Section 1. Name and boundaries of state. The name of this state is Idaho, and its boundaries are as follows: Beginning at a point in the middle channel of the Snake river where the northern boundary of Oregon intersects the same; then follow down the channel of Snake river to a point opposite the mouth of the Kooskooskia or Clearwater river; thence due north to the forty-ninth parallel of latitude; thence east along that parallel to the thirty-ninth degree of longitude west of Washington; thence south along that degree of longitude to the crest of the Bitter Root mountains; thence southward along the crest of the Bitter Root mountains till its intersection with the Rocky mountains; thence southward along the crest of the Rocky mountains to the thirty-fourth degree of longitude west of Washington; thence south along that degree of longitude to the forty-second degree of north latitude; thence west along that parallel to the eastern boundary of the state of Oregon; thence north along that boundary to the place of beginning.