| Ada County | 4 | Meridian Joint School District 2271,490 people |
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| Adams County | 4 | Council School District 132,268 people |
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| Bannock County | 3 | Pocatello School District 2582,117 people |
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| Bear Lake County | 1 | Bear Lake County School District 336,384 people |
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| Benewah County | 3 | St. Maries Joint School District 417,054 people |
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| Bingham County | 6 | Bonneville Joint School District 9363,294 people |
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| Blaine County | 1 | Blaine County School District 6124,951 people |
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| Boise County | 4 | Boise City Independent School District 1212,323 people |
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| Bonner County | 2 | Lake Pend Oreille School District 8436,467 people |
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| Bonneville County | 6 | Idaho Falls School District 9163,688 people |
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| Boundary County | 1 | Boundary County School District 10113,172 people |
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| Butte County | 2 | Butte County Joint School District 1112,596 people |
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| Camas County | 1 | Camas County School District 1211,124 people |
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| Canyon County | 10 | Nampa School District 131105,058 people |
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| Caribou County | 3 | Soda Springs Joint School District 1504,235 people |
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| Cassia County | 4 | Cassia County Joint School District 15125,243 people |
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| Clark County | 1 | Clark County School District 161849 people |
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| Clearwater County | 4 | Orofino Joint School District 1719,260 people |
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| Custer County | 3 | Challis Joint School District 1812,867 people |
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| Elmore County | 4 | Mountain Home School District 19326,461 people |
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| Franklin County | 3 | Preston Joint School District 20111,285 people |
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| Fremont County | 2 | Fremont County Joint School District 21512,641 people |
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| Gem County | 1 | Emmett Independent School District 22120,614 people |
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| Gooding County | 6 | Jerome Joint School District 26121,978 people |
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| Idaho County | 5 | Mountain View School District 24410,563 people |
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| Jefferson County | 3 | Jefferson County Joint School District 25128,220 people |
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| Jerome County | 4 | Minidoka County Joint School District 33122,816 people |
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| Kootenai County | 6 | Coeur d'Alene School District 27188,435 people |
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| Latah County | 6 | Moscow School District 28130,024 people |
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| Lemhi County | 3 | Salmon School District 2917,545 people |
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| Lewis County | 4 | Kamiah Joint School District 3044,128 people |
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| Lincoln County | 6 | Minidoka County Joint School District 33122,816 people |
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| Madison County | 2 | Madison School District 32149,923 people |
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| Minidoka County | 1 | Minidoka County Joint School District 33122,816 people |
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| Nez Perce County | 6 | Lewiston Independent School District 34037,403 people |
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| Oneida County | 1 | Oneida County School District 3514,768 people |
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| Owyhee County | 8 | Homedale Joint School District 3706,166 people |
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| Payette County | 3 | Payette Joint School District 37111,298 people |
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| Power County | 3 | American Falls Joint School District 3817,339 people |
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| Shoshone County | 4 | Kellogg Joint School District 3919,047 people |
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| Teton County | 1 | Teton County School District 40112,425 people |
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| Twin Falls County | 9 | Twin Falls School District 41162,178 people |
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| Valley County | 2 | McCall-Donnelly Joint School District 4219,491 people |
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| Washington County | 4 | Payette Joint School District 37111,298 people |
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