| États | Districts | Nombre
de Comtés | Comtés |
 Arkansas | est | 41 | Arkansas, Chicot, Clay, Cleburne, Cleveland, Conway, Craighead, Crittenden, Cross, Dallas, Desha, Drew, Faulkner, Fulton, Grant, Greene, Independence, Izard, Jackson, Jefferson, Lawrence, Lee, Lincoln, Lonoke, Mississippi, Monroe, Perry, Phillips, Poinsett, Pope, Prairie, Pulaski, Randolph, Saline, Sharp, Saint-Francis, Stone, Van Buren, White, Woodruff et Yell, |
| ouest | 34 | Ashley, Baxter, Benton, Boone, Bradley, Calhoun, Carroll, Clark, Columbia, Crawford, Franklin, Garland, Hempstead, Hot Spring, Howard, Johnson, Lafayette, Little River, Logan, Madison, Marion, Miller, Montgomery, Nevada, Newton, Ouachita, Pike, Polk, Scott, Searcy, Sebastian, Sevier, Union et Washington. |
 Dakota du Nord | Totalité de l’État |
 Dakota du Sud | Totalité de l’État |
 Iowa | nord | 52 | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Buena Vista, Butler, Calhoun, Carroll, Cedar, Cerro Gordo, Cherokee, Chichasaw, Clay, Clayton, Crawford, Delaware, Dickinson, Dubuque, Emmet, Fayette, Floyd, Franklin, Grundy, Hamilton, Hancock, Hardin, Howard, Humboldt, Ida, Iowa, Jackson, Jones, Kossuth, Linn, Lyon, Mitchell, Monona, O'Brien, Osceola, Palo Alto, Plymouth, Pochaontas, Sac, Sioux, Tama, Webster, Winnebago, Winneshiek, Woodbury, Worth et Wright. |
| sud | 47 | Adair, Adams, Appanoose, Audubon, Boone, Cass, Clarke, Clinton, Dallas, Davis, Decatur, Des Moines, Fremont · Greene, Guthrie, Harrison, Henry, Jasper, Jefferson, Johnson, Keokuk, Lee, Louisa, Lucas, Madison, Mahaska, Marion, Marshall, Mills, Monroe, Montgomery, Muscatine, Page, Polk, Pottawattamie, Poweshiek, Ringgold, Scott, Shelby, Story, Taylor, Union, Van Buren, Wapello, Warren, Washington et Wayne. |
 Minnesota | Totalité de l’État |
 Missouri | est | 48 | Adair, Audrain, Bollinger, Butler, Cape Girardeau, Carter, Chariton, Clark, Crawford, Dent, Dunklin, Franklin, Gasconade, Iron, Jefferson, Knox, Lewis, Lincoln, Linn, Macon, Madison, Maries, Marion, Monroe, Mississippi, New Madrid, Montgomery, Pemiscot, Perry, Phelps, Pike, Ralls, Randolph, Reynolds, Ripley, Saint Charles, Saint Francois, Sainte-Geneviève, Saint-Louis, Schuyler, Scotland, Scott, Shannon, Shelby, Stoddard, Warren, Washington et Wayne |
| ouest | 66 | Andrew, Atchison, Barry, Barton, Bates, Benton, Boone, Buchanan, Caldwell, Callaway, Camden, Carroll, Cass, Cedar, Christian, Clay, Clinton, Cole, Cooper, Dade, Dallas, Daviess, DeKalb, Douglas, Gentry, Greene, Grundy, Harrison, Henry, Hickory, Holt, Howard, Howell, Jackson, Jasper, Johnson, Laclede, Lafayette, Lawrence, Livingston, McDonald, Mercer, Miller, Moniteau, Morgan, Newton, Nodaway, Oregon, Osage, Ozark, Pettis, Platte, Polk, Pulaski, Putnam, Ray, Saint Clair, Saline, Stone, Sullivan, Taney, Texas, Vernon, Webster, Worth et Wright. |
 Nebraska | Totalité de l’État |
