Region 4 serves the following areas:
- Region 4 Area 1
Bryan, Choctaw, Cleveland, Garvin, Hughes, Johnston, Latimer, Le Flore, McClain, McCurtain, Marshall, Murray, Pittsburg, Pottawatomie, Seminole Counties
- Region 4 Area 2
Atoka, Carter, Coal, Comanche, Cotton, Greer, Harmon, Jackson, Jefferson, Kiowa, Love, Pontotoc, Pushmataha, Stephens, Tillman