TrailNorth Federal Credit Union has been serving the financial needs of its members since 1954. TrailNorth provides membership to... Persons who live, work, worship, or attend school in, or businesses or legal entities located in Essex, Washington, Warren, Clinton and Franklin Counties in New York and Addison County in Vermont. Immediate family members of a person eligible for membership. The immediate family member is defined as a spouse, child, sibling, parent, grandparent, or grandchild. This would include step-parents, step-children, step-siblings, and adopted relationships. Eligibility also extends to unrelated persons who share a residence and who maintain a single economic unit. This includes any person who is a permanent member of and helps maintain, the household. Organizations of such persons, such as associations, churches, etc.