USPS - Postal Service in Potomac - Locations & Hours
| Name | Address | Phone | |
|---|---|---|---|
| USPS - Post Office - Potomac | 107 W State St | 217-987-6677 | |
| USPS Mail Collection/Drop Box - 107 W State St | 107 W State St | ||
| USPS Mail Collection/Drop Box - 109 W State St | 109 W State St | ||