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Centers for Medicare & Medicaid Services

County Listings for Split States

Use the County List Search drop-down to see which counties fall within each split state.
Select Your Area:

  • Alameda, CA

  • Alpine, CA

  • Amador, CA

  • Butte, CA

  • Calaveras, CA

  • Colusa, CA

  • Contra Costa, CA

  • Del Norte, CA

  • El Dorado, CA

  • Fresno, CA

  • Glenn, CA

  • Humboldt, CA

  • Inyo, CA

  • Kern, CA

  • Kings, CA

  • Lake, CA

  • Lassen, CA

  • Madera, CA

  • Marin, CA

  • Mariposa, CA

  • Mendocino, CA

  • Merced, CA

  • Modoc, CA

  • Mono, CA

  • Monterey, CA

  • Napa, CA

  • Nevada, CA

  • Placer, CA

  • Plumas, CA

  • Riverside, CA

  • Sacramento, CA

  • San Benito, CA

  • San Bernardino, CA

  • San Francisco, CA

  • San Joaquin, CA

  • San Mateo, CA

  • Santa Clara, CA

  • Santa Cruz, CA

  • Shasta, CA

  • Sierra, CA

  • Siskiyou, CA

  • Solano, CA

  • Sonoma, CA

  • Stanislaus, CA

  • Sutter, CA

  • Tehama, CA

  • Trinity, CA

  • Tulare, CA

  • Tuolumne, CA

  • Yolo, CA

  • Yuba, CA
  • Imperial, CA

  • Los Angeles, CA

  • Orange, CA

  • San Diego, CA

  • San Luis Obispo, CA

  • Santa Barbara, CA

  • Ventura, CA
  • Adair, MO

  • Audrain, MO

  • Barry, MO

  • Barton, MO

  • Bollinger, MO

  • Boone, MO

  • Butler, MO

  • Callaway, MO

  • Camden, MO

  • Cape Girardeau, MO

  • Carter, MO

  • Cedar, MO

  • Chariton, MO

  • Christian, MO

  • Clark, MO

  • Cole, MO

  • Cooper, MO

  • Crawford, MO

  • Dade, MO

  • Dallas, MO

  • Dent, MO

  • Douglas, MO

  • Dunklin, MO

  • Franklin, MO

  • Gasconade, MO

  • Greene, MO

  • Hickory, MO

  • Howard, MO

  • Howell, MO

  • Iron, MO

  • Jasper, MO

  • Jefferson, MO

  • Knox, MO

  • Laclede, MO

  • Lawrence, MO

  • Lewis, MO

  • Lincoln, MO

  • Linn, MO

  • Macon, MO

  • Madison, MO

  • Maries, MO

  • Marion, MO

  • Mcdonald, MO

  • Miller, MO

  • Mississippi, MO

  • Moniteau, MO

  • Monroe, MO

  • Montgomery, MO

  • Morgan, MO

  • New Madrid, MO

  • Newton, MO

  • Oregon, MO

  • Osage, MO

  • Ozark, MO

  • Pemiscot, MO

  • Perry, MO

  • Phelps, MO

  • Pike, MO

  • Polk, MO

  • Pulaski, MO

  • Putnam, MO

  • Ralls, MO

  • Randolph, MO

  • Ripley, MO

  • Schuyler, MO

  • Scotland, MO

  • Scott, MO

  • Shannon, MO

  • Shelby, MO

  • St. Charles, MO

  • St. Francois, MO

  • St. Genevieve, MO

  • St. Louis, MO

  • Stoddard, MO

  • Stone, MO

  • Sullivan, MO

  • Taney, MO

  • Texas, MO

  • Warren, MO

  • Washington, MO

  • Wayne, MO

  • Webster, MO

  • Wright, MO
  • Andrew, MO

  • Atchison, MO

  • Bates, MO

  • Benton, MO

  • Buchanan, MO

  • Caldwell, MO

  • Carroll, MO

  • Cass, MO

  • Clay, MO

  • Clinton, MO

  • Daviess, MO

  • Dekalb, MO

  • Gentry, MO

  • Grundy, MO

  • Harrison, MO

  • Henry, MO

  • Holt, MO

  • Jackson, MO

  • Johnson, MO

  • Lafayette, MO

  • Livingston, MO

  • Mercer, MO

  • Nodaway, MO

  • Pettis, MO

  • Platte, MO

  • Ray, MO

  • Reynolds, MO

  • Saline, MO

  • St. Clair, MO

  • St. Louis City, MO

  • Vernon, MO

  • Worth, MO
  • Bronx, NY

  • Columbia, NY

  • Delaware, NY

  • Dutchess, NY

  • Greene, NY

  • Kings (Brooklyn), NY

  • Nassau, NY

  • New York (Manhattan), NY

  • Orange, NY

  • Putnam, NY

  • Richmond (Staten Island), NY

  • Rockland, NY

  • Suffolk, NY

  • Sullivan, NY

  • Ulster, NY

  • Westchester, NY
  • Albany, NY

  • Allegany, NY

  • Broome, NY

  • Cattaraugus, NY

  • Cayuga, NY

  • Chautauqua, NY

  • Chemung, NY

  • Chenango, NY

  • Clinton, NY

  • Cortland, NY

  • Erie, NY

  • Essex, NY

  • Franklin, NY

  • Fulton, NY

  • Genesee, NY

  • Hamilton, NY

  • Herkimer, NY

  • Jefferson, NY

  • Lewis, NY

  • Livingston, NY

  • Madison, NY

  • Monroe, NY

  • Montgomery, NY

  • Niagara, NY

  • Oneida, NY

  • Onondaga, NY

  • Ontario, NY

  • Orleans, NY

  • Oswego, NY

  • Otsego, NY

  • Rensselaer, NY

  • Saint Lawrence, NY

  • Saratoga, NY

  • Schenectady, NY

  • Schoharie, NY

  • Schuyler, NY

  • Seneca, NY

  • Steuben, NY

  • Tioga, NY

  • Tompkins, NY

  • Warren, NY

  • Washington, NY

  • Wayne, NY

  • Wyoming, NY

  • Yates, NY
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