Post Offices List in Jefferson County, Kansas:
| Grantville Post Office | 2123 Washington St, Grantville, KS 66429 |
| MC Louth Post Office | 301 S Union St, Mc Louth, KS 66054 |
| Meriden Post Office | 101 N Palmberg St, Meriden, KS 66512 |
| Nortonville Post Office | 220 Railroad St, Nortonville, KS 66060 |
| Oskaloosa Post Office | 302 Washington St, Oskaloosa, KS 66066 |
| Ozawkie Post Office | 104 Main St, Ozawkie, KS 66070 |
| Perry Post Office | 209 N Elm St, Perry, KS 66073 |
| Valley Falls Post Office | 405 Sycamore St, Valley Falls, KS 66088 |