Post Offices List in Nowata County, Oklahoma:
| Delaware Post Office | 117 Elevator, Delaware, OK 74027 |
| Lenapah Post Office | 400 Shawnee, Lenapah, OK 74042 |
| Nowata Post Office | 109 N Pine St, Nowata, OK 74048 |
| S Coffeyville Post Office | 501 Willow St, S Coffeyville, OK 74072 |
| Wann Post Office | 107 W Main St, Wann, OK 74083 |