Kansas has 4 congressional districts and 105 counties: 103 counties are wholly within a given congressional district while 2 counties are divided between more than one congressional district:

UNDIVIDED COUNTIES (wholly within a Congressional District):

• CD 1: Barber, Barton, Chase, Cheyenne, Clark, Clay, Cloud, Comanche, Decatur, Dickinson, Edwards, Ellis, Ellsworth, Finney, Ford, Gove, Graham, Grant, Gray, Greeley, Hamilton, Haskell, Hodgeman, Jewell, Kearny, Kiowa, Lane, Lincoln, Logan, Lyon, McPherson, Marshall, Meade, Mitchell, Morris, Morton, Ness, Norton, Osborne, Ottawa, Pawnee, Phillips, Pratt, Rawlins, Reno, Republic, Rice, Rooks, Rush, Russell, Saline, Scott, Seward, Sheridan, Sherman, Smith, Stafford, Stanton, Stevens, Thomas, Trego, Waubansee, Wallace, Washington and Wichita.
• CD 2: Allen, Anderson, Atchison, Bourbon, Brown, Cherokee, Coffey, Crawford, Doniphan, Franklin, Geary, Jackson, Jefferson, Labette, Leavenworth, Linn, Nemaha, Neosho, Osage, Pottawatomie, Riley, Shawnee, Wilson and Woodson.
• CD 3: Johnson, Miami and Wyandotte.
• CD 4: Butler, Chautauqua, Cowley, Elk, Greenwood, Harper, Harvey, Kingman, Montgomery, Sedgwick and Sumner.

DIVIDED COUNTIES: (split between more than one Congressional District)

• Douglas: CDs 2 and 3
• Marion: CDs 1 and 4