Membership is open to anyone who resides or works in Kankakee, Ford, Iroquois, Grundy, Kendall, Livingston, or Will County in Illinois. If you don't meet any of these qualifications, you are still eligible to join if you are a family member of a current CommonWealth Credit Union member or if you work at any one of our Select Employee Groups. CommonWealth Credit Union has several eligible employee groups in its field of membership.