Persons who live, work, worship or attend school, and businesses located in the counties of Yellowstone, Carbon, Stillwater, Sweet Grass, Wheatland, Golden Valley and Musselshell are eligible for membership at Altana Federal Credit Union.
As an added feature of membership, immediate family members are able to join. Immediate family members include a spouse, child, sibling, parent, grandparent, grandchild, stepparent, stepchild, stepsibling or adoptive relationship.