| Business | Phone |
| County Courthouse 203 Main St, Purvis 39475 | (601) 794-8504 |
| County Of Lamar 403 Main St, Purvis 39475 | (601) 794-8504 |
| Curriculum Supervisor 300 North St, Purvis 39475 | (601) 794-6094 |
| Lamar County Addressing 302 Main St, Purvis 39475 | (601) 794-3911 |
| Lamar County Administrator 203 Main St, Purvis 39475 | (601) 544-4410 |
| Lamar County Bus Maintenance 5911 Highway 11 S, Purvis 39475 | (601) 794-2274 |
| Lamar County Chapter 1 424 Martin Luther King Dr, Purvis 39475 | (601) 794-8518 |
| Lamar County Courtroom 109 Main St, Purvis 39475 | (601) 794-8504 |
| Lamar County E-911 Dispatch 201 Main St, Purvis 39475 | (601) 794-8610 |
| Lamar County Ecomonic Dev Dist 203 Main St, Purvis 39475 | (601) 794-1011 |
| Lamar County Fair Grounds 43 Central Industrial Row, Purvis 39475 | (601) 794-3906 |
| Lamar County Home Economist 211 Pecan St, Purvis 39475 | (601) 794-8504 |
| Lamar County Information Purvis 39475 | (601) 794-8504 |
| Lamar County Jury Information 203 Main St, Purvis 39475 | (601) 794-1047 |
| Lamar County Jury Information North St, Purvis 39475 | (601) 794-1047 |
| Lamar County Law Clerk 203 Main St, Purvis 39475 | (601) 794-1067 |
| Lamar County Maintenance Crths 202 North St, Purvis 39475 | (601) 794-8952 |
| Lamar County Maintenance Shop 640 Highway 589, Purvis 39475 | (601) 794-0037 |
| Lamar County Planning Dept 302 Main St, Purvis 39475 | (601) 794-1024 |
| Lamar County Road Manager 403 Main St, Purvis 39475 | (601) 794-6644 |
| Lamar County Veteran's Office 402 Pecan St, Purvis 39475 | (601) 794-4218 |
| Lamar County Veterans Svc Ofc Pecan Dr, Purvis 39475 | (601) 794-3902 |
| Pearl River Valley Opportunity 103 Shelby Speights Dr, Purvis 39475 | (601) 794-8387 |