| Business | Phone |
| Lyman County Conference Room 300 S Main St, Kennebec 57544 | (605) 869-2594 |
| Lyman County Equalization Lyman Courthouse, Kennebec 57544 | (605) 869-2206 |
| Lyman County Extension Offc Po Box 68, Kennebec 57544 | (605) 869-2227 |
| Lyman County Extension Office Courthouse, Kennebec 57544 | (605) 869-2226 |
| Lyman County Highway Shop 100 E Sd 248, Kennebec 57544 | (605) 869-2202 |
| Lyman County Nurse 300 South Main St, Kennebec 57544 | (605) 869-2217 |
| Lyman County Register Of Deeds 200 S Main St, Kennebec 57544 | (605) 869-2297 |