Contact Child Support

Toll free at 1-800-346-5437

The CSSD phone system allows individuals to receive general CSSD information, including payment and account balances, as well as the ability to speak to a case worker directly.  For all CSSD calls, please call 1-800-346-5437.

Below are links to lists of caseworkers and their email addresses for each regional office.

Mailing Address

CSSD Central Mail Unit
PO Box 202943
Helena, MT 59620-2943

Fax Number

(406) 444-9626

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

Central Office

2401 Colonial Drive, First Floor
PO Box 202943
Helena, MT 59620-2943
Toll-free: (800) 346-5437
Fax: (406) 444-1370 This email address is only intended for general questions about the child support program. For case related question please contact the caseworker directly.