Idaho Code § 31-111
Bonner county is described as follows: beginning at a point where the township line between townships fifty-three (53) and fifty-four (54) north intersects the boundary line between the state of Idaho and the state of Washington;
Southern boundary. Thence east on said township line between townships fifty-three (53) and fifty-four (54) north, to the northeast corner of township fifty-three (53) north, range three (3) west; thence north on the range line between sections thirty-six (36) and thirty-one (31), to the northeast corner of section thirty-six (36), township fifty-four (54) north, range three (3) west; thence east six (6) miles to the northeast corner of section thirty-six (36), township fifty-four (54) north, range two (2) west; thence south along the range line between ranges one (1) and two (2) west, to the southwest corner of township fifty-three (53) north, range one (1) west; thence east on the township line between townships fifty-two (52) and fifty-three (53) north, to the northeast corner of section four (4), township fifty-two (52) north, range one (1) east, being the northeast corner of Kootenai county with Shoshone county to the east and Bonner county to the north;
Thence east on said township line approximately 32.24 chains (2,128 feet) to the south quarter corner of section thirty-four (34), township fifty-three (53) north, range one (1) east, being the southeast corner of Bonner county with Shoshone county to the south and east;
Thence north along the west boundary line of Shoshone county to the northwest corner thereof; thence in an easterly direction along the summit of the Coeur d'Alene range of mountains to the west line of the state of Montana;
Eastern boundary. Thence north along the boundary line between the state of Idaho and the state of Montana (R.C., section 23g) to a point where the south line of township sixty (60) north of range three (3) east intersects the boundary line between the state of Idaho and the state of Montana;
Northern boundary. Thence west along said south line of township sixty (60) through ranges three (3), two (2), and one (1) east, and ranges one (1), two (2), and three (3) west, to the southwest corner of township sixty (60) north, range three (3) west; thence north along the range line between ranges three (3) and four (4) west, to the point where the north line of township sixty-three (63) north, intersects the range line between ranges three (3) and four (4) west; thence west along the said north line of township sixty-three (63) north, ranges four (4) and five (5) west, to a point on the state line between the states of Idaho and Washington where the same is intersected by the said north line of township sixty-three (63) north, range five (5) west (1915, ch. 7, section 2, p. 21);
Western boundary. Thence south along the boundary line between the state of Idaho and the state of Washington to the place of beginning (R.C., section 23g).
County seat-Sandpoint.
Idaho Code § 31-111