| Church Name | City | Email | Phone |
| Bethel | Wheaton | friends @ bethelopc.org | 630-665-5577 |
| Christ Covenant | Crystal Lake | wilkins.1 @ opc.org | 815-317-6721 |
| Covenant | Orland Park | wright.1 @ opc.org | 708-403-3404 |
| First Church | South Holland | secretary @ firstchurchsh.org | 708-333-8211 |
| Grace | Elburn | gracechurchelburn @ gmail.com | 630-906-9661 |
| Grace | Hanover Park | admin @ graceopchurch.org | 630-837-1699 |
| Hope | Grayslake | mail @ hopeopc.com | 847-752-8108 |
| Mission | Merrillville | pastor @ missionchurchopc.org | 559-974-1697 |
| Momence | Momence | momenceopc @ gmail.com | 815-472-2943 |
| New Covenant Community | Joliet | ncccopc @ gmail.com | 815-630-2175 |
| Westminster | Countryside | info @ westminsteropc.org | 708-784-9601 |
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