| Business | Phone |
| Cass County Civil Processing 336 Main St, Plattsmouth 68048 | (402) 296-9375 |
| Cass County Commissioners 346 Main St 101, Plattsmouth 68048 | (402) 296-9309 |
| Cass County Register Of Deeds 346 Main St 206, Plattsmouth 68048 | (402) 296-9330 |
| Cass County Surveyor 346 Main St 109, Plattsmouth 68048 | (402) 296-9362 |
| Cass County Veterans Svc 346 Main St 106, Plattsmouth 68048 | (402) 296-9368 |
| County Road Shop 1007 Oak Hill Rd, Plattsmouth 68048 | (402) 298-8038 |