USPS - Postal Service in Imperial - Locations & Hours
| Name | Address | Phone | |
|---|---|---|---|
| USPS - CPU OTTO | 5714 Old State Route 21 | 314-942-3567 | |
| USPS - Post Office - Imperial | 6035 W Outer Rd | 636-464-3538 | |
| USPS Mail Collection/Drop Box - 5432 Old State Route 21 | 5432 Old State Route 21 | ||
| USPS Mail Collection/Drop Box - 5714 Old Hwy 21 | 5714 Old Hwy 21 | ||
| USPS Mail Collection/Drop Box - 6035 S Outer Rd | 6035 S Outer Rd | ||