Post Offices List in Johnson County, Nebraska:
| Cook Post Office | 214 W Main St, Cook, NE 68329 |
| Crab Orchard Post Office | 60829 725 Rd, Crab Orchard, NE 68332 |
| Elk Creek Post Office | 369 Main St, Elk Creek, NE 68348 |
| Tecumseh Post Office | 484 Broadway St, Tecumseh, NE 68450 |