Post Offices List in Linn County, Kansas:
| Blue Mound Post Office | 409 E Main St, Blue Mound, KS 66010 |
| Centerville Post Office | 206 E Market St, Centerville, KS 66014 |
| La Cygne Post Office | 521 E Market St, La Cygne, KS 66040 |
| Mound City Post Office | 504 Main St, Mound City, KS 66056 |
| Parker Post Office | 102 N Center Ave, Parker, KS 66072 |
| Pleasanton Post Office | 1004 Main St, Pleasanton, KS 66075 |
| Prescott Post Office | 317 Main St, Prescott, KS 66767 |