New England Federal Credit Union - Williston. Serving members in New England and beyond. NorthCountry Federal Credit Union - A member-owned financial co-operative operating six branches in the state. Vermont State Employees Credit Union - Membership is open to people who live or work in six Vermont counties (Chittenden, Lamoille, Washington, Caledonia, Addison and Orange), Vermont state employees, several select employee groups, and relatives of existing members. Green Mountain Credit Union - South Burlington. Serving employees, retirees and their families of select employee groups. Members Advantage Community Credit Union - Barre. Membership is open to select teacher groups. Opportunities Credit Union - Community financial institution serving the entire state.