USPS - Postal Service in Humboldt - Locations & Hours
| Name | Address | Phone | |
|---|---|---|---|
| USPS - Post Office - Humboldt | 601 Sumner Ave | 515-332-3506 | |
| USPS Mail Collection/Drop Box - 601 Sumner Ave N | 601 Sumner Ave N | ||
| USPS Mail Collection/Drop Box - 611 10th Ave N | 611 10th Ave N | ||
| USPS Mail Collection/Drop Box - 710 1st Ave | 710 1st Ave | ||