| Business | Phone |
| C-Mart 900 E Main St, Flat River 63601 | (573) 431-3433 |
| Casey's General Store 16 Science St, Flat River 63601 | (573) 431-9925 |
| Casey's General Store 601 S Saint Joe Dr, Flat River 63601 | (573) 431-9962 |
| Park Hills Citgo 7 E Main St, Flat River 63601 | (573) 431-5565 |
| Express Shop 1020 E Main St, Flat River 63601 | (573) 431-5924 |