| Business | Phone |
| Bridge Garage 101 N Chestnut St, Atlantic 50022 | (712) 243-2892 |
| Cass Cnty Treasurer's Office 5 W 7th St 1, Atlantic 50022 | (712) 243-2975 |
| Cass County Auditor 5 W 7th St, Atlantic 50022 | (712) 243-4570 |
| Cass County Zoning Commission 5 W 7th St, Atlantic 50022 | (712) 243-2442 |
| Cass County Extension Svc 805 W 10th St, Atlantic 50022 | (712) 243-1132 |
| Cass County General Relief 5 W 7th St, Atlantic 50022 | (712) 243-4424 |
| Cass County Judges's Office 5 W 7th St, Atlantic 50022 | (712) 243-3452 |
| Cass County Recorder 5 W 7th St, Atlantic 50022 | (712) 243-1692 |
| Cass Veteran Affairs Comm 5 W 7th St, Atlantic 50022 | (712) 243-6662 |
| Maintenance Garage 100 Chestnut St, Atlantic 50022 | (712) 243-3842 |