Post Offices List in Jefferson County, Nebraska:
| Daykin Post Office | 312 Jefferson St, Daykin, NE 68338 |
| Diller Post Office | 408 Commercial St, Diller, NE 68342 |
| Endicott Post Office | 206 N Scribner St, Endicott, NE 68350 |
| Fairbury Post Office | 501 D St, Fairbury, NE 68352 |
| Jansen Post Office | 305 Broad St, Jansen, NE 68377 |
| Plymouth Post Office | 321 E Main St, Plymouth, NE 68424 |
| Reynolds Post Office | 128 Commercial St, Reynolds, NE 68429 |
| Steele City Post Office | 201 W Main St, Steele City, NE 68440 |