USPS - Postal Service in Grain Valley - Locations & Hours
| Name | Address | Phone | |
|---|---|---|---|
| USPS - Post Office - Grain Valley | 112 W Walnut St | 816-228-2024 | |
| USPS Mail Collection/Drop Box - 112 W Walnut St | 112 W Walnut St | ||
| USPS Mail Collection/Drop Box - 1251 Aa Highway | 1251 Aa Highway | ||