Idaho Code
Chapter 1 - COUNTY BOUNDARIES AND COUNTY SEATS
Section 31-146 - WASHINGTON COUNTY.

31-146. WASHINGTON COUNTY. Washington county is described as follows: beginning at a point on the boundary line between the states of Idaho and Oregon, the same being the middle of the center channel of Snake river, three thousand nine hundred sixty (3,960) feet in a southwesterly direction from the mouth of Wildhorse river;
Northern boundary. Thence in an easterly direction fifteen and one-half (15 1/2) miles, to a point one-half (1/2) mile east of the west quarter (W1/4) corner of section six (6), township seventeen (17) north, range two (2) west; thence south about twelve (12) miles, to the intersection of said line with Cow creek; thence southeast down the center line of Cow creek to its confluence with the Weiser river; thence south across the Weiser river to a point five hundred (500) feet east of the north quarter (N1/4) corner of section twenty-nine (29), township fifteen (15) north, range two (2) west; thence east about three and three-quarters (3 3/4) miles, to a point one thousand three hundred twenty (1,320) feet east of the northwest corner of section twenty-five (25), said township and range; thence south eight and one-half (8 1/2) miles, to a point one thousand three hundred twenty (1,320) feet east of the west quarter (W1/4) corner of section one (1), township thirteen (13) north, range two (2) west; thence in a southeasterly direction six and one-half (6 1/2) miles, to a point one thousand three hundred twenty (1,320) feet south and one thousand three hundred twenty (1,320) feet east of the west quarter (W1/4) corner of section twenty-four (24), township thirteen (13) north, range one (1) west; thence east (1911, ch. 31, section 2, p. 67) to the summit of the dividing range between the waters of Crane creek on the west and Squaw creek on the east;
Eastern boundary. Thence southerly along the summit of said dividing range to the intersection of said dividing ridge with the second (2d) standard parallel north (R.C., section 23f);
Southern boundary. Thence west along said second (2d) standard parallel to its intersection with the Snake river;
Western boundary. Thence down the main channel of Snake river, to the place of beginning (R.C., section 23w).
County seat–Weiser.

History:
[(31-146) Compiled and reen. C.L. 3:43; C.S., sec. 50; I.C.A., sec. 30-146.]

Structure Idaho Code

Idaho Code

Title 31 - COUNTIES AND COUNTY LAW

Chapter 1 - COUNTY BOUNDARIES AND COUNTY SEATS

Section 31-101 - STATE DIVIDED INTO COUNTIES.

Section 31-102 - DEFINITION OF DESCRIPTIVE TERMS.

Section 31-103 - ADA COUNTY.

Section 31-104 - ADAMS COUNTY.

Section 31-105 - BANNOCK COUNTY.

Section 31-106 - BEAR LAKE COUNTY.

Section 31-107 - BENEWAH COUNTY.

Section 31-108 - BINGHAM COUNTY.

Section 31-109 - BLAINE COUNTY.

Section 31-110 - BOISE COUNTY.

Section 31-111 - BONNER COUNTY.

Section 31-112 - BONNEVILLE COUNTY.

Section 31-113 - BOUNDARY COUNTY.

Section 31-114 - BUTTE COUNTY.

Section 31-115 - CAMAS COUNTY.

Section 31-116 - CANYON COUNTY.

Section 31-117 - CARIBOU COUNTY.

Section 31-118 - CASSIA COUNTY.

Section 31-119 - CLARK COUNTY.

Section 31-120 - CLEARWATER COUNTY.

Section 31-121 - CUSTER COUNTY.

Section 31-122 - ELMORE COUNTY.

Section 31-123 - FRANKLIN COUNTY.

Section 31-124 - FREMONT COUNTY.

Section 31-125 - GEM COUNTY.

Section 31-126 - GOODING COUNTY.

Section 31-127 - IDAHO COUNTY.

Section 31-128 - JEFFERSON COUNTY.

Section 31-129 - JEROME COUNTY.

Section 31-130 - KOOTENAI COUNTY.

Section 31-131 - LATAH COUNTY.

Section 31-132 - LEMHI COUNTY.

Section 31-133 - LEWIS COUNTY.

Section 31-134 - LINCOLN COUNTY.

Section 31-135 - MADISON COUNTY.

Section 31-136 - MINIDOKA COUNTY.

Section 31-137 - NEZ PERCE COUNTY.

Section 31-138 - ONEIDA COUNTY.

Section 31-139 - OWYHEE COUNTY.

Section 31-140 - PAYETTE COUNTY.

Section 31-141 - POWER COUNTY.

Section 31-142 - SHOSHONE COUNTY.

Section 31-143 - TETON COUNTY.

Section 31-144 - TWIN FALLS COUNTY.

Section 31-145 - VALLEY COUNTY.

Section 31-146 - WASHINGTON COUNTY.