Post Offices List in Columbia City, Tennessee:
| Columbia Post Office | 417 W 7th St, Columbia, TN 38401 |
| Columbia Post Office | 417 W 7th St, Columbia, TN 38401 |
| Columbia Post Office | 417 W 7th St, Columbia, TN 38401 |
| Columbia Post Office | 417 W 7th St, Columbia, TN 38401 |