| Business | Phone |
| First State Bank-Warren 220 N Martin St, Warren 71671 | (870) 226-8680 |
| Warren Bank & Trust Co 201 S Main St, Warren 71671 | (870) 226-2621 |
| Warren Bank & Trust Co 312 S Martin St, Warren 71671 | (870) 226-2525 |
| Union Bank & Trust Co 400 N Main St, Warren 71671 | (870) 226-2035 |