| Business | Phone |
| Mercer County Associate Cts 802 E Main St, Princeton 64673 | (660) 748-4232 |
| Mercer County Circuit Clerk 802 E Main St, Princeton 64673 | (660) 748-4335 |
| Mercer County Public Adm 802 E Main St, Princeton 64673 | (660) 748-3411 |
| Mercer County Roads & Bridge 801 E Main St, Princeton 64673 | (660) 382-3820 |