| Business | Phone |
| Register Of Deeds 120 E Chestnut St, Troy 66087 | (785) 985-3932 |
| County Commissioners 120 E Chestnut, Troy 66087 | (785) 985-2665 |
| Doniphan Cnty Health-Home Hlth 201 S Main St, Troy 66087 | (785) 985-3591 |
| Doniphan County Dist Ct Clerk 120 E Chestnut St, Troy 66087 | (785) 985-3582 |
| Doniphan County Engineer 120 E Chestnut St, Troy 66087 | (785) 985-3535 |
| Doniphan County Extension Agnt 120 E Chestnut St, Troy 66087 | (785) 985-3623 |
| Doniphan County Reappraisal 120 E Chestnut St, Troy 66087 | (785) 985-3977 |
| Doniphan County Road Shop 302 W Robertson St, Troy 66087 | (785) 985-3914 |
| Emergency Preparedness 120 E Chestnut St, Troy 66087 | (785) 985-2229 |