Central Office
2401 Colonial Drive, First Floor
PO Box 202943
Helena, MT 59620-2943
(406) 444-6856
Toll-free: (800) 346-5437
Fax: (406) 444-1370
childsupport@mt.gov This email address is only intended for general questions about the child support program. For case related question please contact the caseworker directly.