| Business | Phone |
| Hampden County Commission 50 State St # 2, Springfield 1103 | (413) 748-7855 |
| Hampden County Employment 1176 Main St, Springfield 1103 | (413) 781-6900 |
| Hampden County Energy Office 50 State St, Springfield 1103 | (413) 748-7912 |
| Hampden County Purchasing Dept 50 State St, Springfield 1103 | (413) 748-7866 |
| Hampden County Registry-Deeds 50 State St, Springfield 1103 | (413) 748-8626 |
| Hampden County Retirement Ofc 50 State St, Springfield 1103 | (413) 748-7880 |