Contact Child Support

The CSSD phone system allows individuals to receive general CSSD information, including payment, account balance, and case worker contact information.  For all CSSD calls, please call 1-800-346-5437.

• Billings Office Region 3 Contact Information
  • This region contains Big Horn, Carbon, Carter, Custer, Dawson, Fallon, Garfield, McCone, Musselshell, Powder River, Prairie, Richland, Rosebud, Treasure, Wibaux, and Yellowstone counties.
• Butte Office Region 4 Contact Information
  • This region contains Beaverhead, Broadwater, Deer Lodge, Fergus, Gallatin, Golden Valley, Granite, Jefferson, Judith Basin, Lewis and Clark, Madison, Meagher, Park, Powell, Silver Bow, Stillwater, Sweet Grass, and Wheatland counties.
• Great Falls Office Region 2 Contact Information
  • This region contains Blaine, Cascade, Chouteau, Daniels, Glacier, Hill, Liberty, Petroleum, Phillips, Pondera, Ravalli, Roosevelt, Sheridan, Teton, Toole and Valley counties
• Helena/Intergovernmental Office Region 8 Contact Information
  • This region contains incoming interstate cases for all counties in Montana.
• Missoula Office Region 5 Contact Information
  • This region contains Flathead, Lake, Lincoln, Mineral, Missoula and Sanders counties.
• NPEC Region 1 Statewide - Arrears Unit Contact Information
  • This region contains all counties across Montana and is designated to work arrears cases only.
• PEMU Region 1 Statewide - Paternity Establishment Modification Unit Contact Information
  • This region contains all counties across Montana and is designated to work paternity establishment and modification cases only.

Click the county on the map below for Regional Office Information.