Post Offices List in Thomas County, Kansas:
| Brewster Post Office | 329 Kansas Ave, Brewster, KS 67732 |
| Colby Post Office | 535 N Court Ave, Colby, KS 67701 |
| Rexford Post Office | 245 Main St, Rexford, KS 67753 |
| Colby Post Office | 535 N Court Ave, Colby, KS 67701 |