MO HealthNet Managed Care operates in the following regions of the State of Missouri:

Eastern Region:
Franklin, Jefferson, Lincoln, Madison, Perry, Pike, St. Charles, St. Francois, Ste. Genevieve, St. Louis, Warren, and Washington counties and St. Louis City.
Central Region:
Audrain, Benton, Boone, Callaway, Camden, Chariton, Cole, Cooper, Gasconade, Howard, Laclede, Linn, Macon, Maries, Marion, Miller, Moniteau, Monroe, Montgomery, Morgan, Osage, Pettis, Phelps, Pulaski, Ralls, Randolph, Saline and Shelby counties.
Western Region:
Bates, Cass, Cedar, Clay, Henry, Jackson, Johnson, Lafayette, Platte, Polk, Ray, St. Clair, and Vernon counties.

View regions map and the MO HealthNet Managed Care Health Plans in each region.