| Business | Phone |
| County Assessor 1501 Main St 110, Princeton 24740 | (304) 487-8329 |
| Mercer County Assessor 1501 W Main St # 2, Princeton 24740 | (304) 487-8397 |
| Mercer County Tax Office 1501 Main St, Princeton 24740 | (304) 327-5311 |
| Tax Dept-Chief Tax Deputy 1501 Main St, Princeton 24740 | (304) 487-8344 |