UECU membership is available to employees and retirees of ADM (Archer Daniels Midland), Ameren Illinois, Vistra Energy and Subsidiaries, Exelon's Clinton, IL Power Station, Decatur, IL Firefighters, and the following:
Anyone living or working in the following counties in Illinois:
- Action Tax, Galesburg, IL
- AMP Mechanical Services
- DCC Interactive (Marketing) Agency, Inc.
- Decatur Computers, Inc.
- Decatur Family YMCA
- Decatur Life Four Square Church Staff/Students/Volunteers
- Fleener & Roberts Automotive
- Members of the Galesburg Rifle Club
- Network Solutions Unlimited, Inc.
- Harvey Brothers Electric
- Marty's Tire Center
- Romano Company, Inc.
- Yemm Auto Group
Also, relatives, by blood or marriage, including parents, children, stepchildren and grandchildren; brothers and sisters, aunts and uncles etc., are eligible to join the credit union.