Post Offices List in Benewah County, Idaho:
| Desmet Post Office | 111 Byrnes Ave, Desmet, ID 83824 |
| Fernwood Post Office | 64127 Highway 3 S, Fernwood, ID 83830 |
| Plummer Post Office | 235 10th St, Plummer, ID 83851 |
| Saint Maries Post Office | 222 S 7th St Ste 2, Saint Maries, ID 83861 |
| Santa Post Office | 68244 Highway 3 S, Santa, ID 83866 |
| Tensed Post Office | 208 3rd St, Tensed, ID 83870 |