| Business | Phone |
| Simpson 4-H Youth Agent 2785 Simpson Highway 49, Mendenhall 39114 | (601) 847-1651 |
| Simpson Cnty E911 Coordinator 150 W Court Ave # 4, Mendenhall 39114 | (601) 847-3434 |
| Simpson Cooperative Ext Svc 2785 Simpson Highway 49, Mendenhall 39114 | (601) 847-1335 |
| Simpson County Administrator 111 W Pine Ave, Mendenhall 39114 | (601) 847-1418 |
| Simpson Election Commission Court St, Mendenhall 39114 | (601) 847-2475 |
| Simpson Extension Home 2785 Simpson Highway 49, Mendenhall 39114 | (601) 847-1626 |
| Social Services 109 W Pine Ave, Mendenhall 39114 | (601) 847-4081 |
| Chancery Circuit Clerk 100 Court St # 2, Mendenhall 39114 | (601) 847-2474 |
| Chancery Clerk's Office 109 W Pine Ave, Mendenhall 39114 | (601) 847-2626 |
| Circuit Courtroom 100 Court St, Mendenhall 39114 | (601) 847-2431 |