| Business | Phone |
| Marshall County Conservation 2349 233rd St, Marshalltown 50158 | (641) 752-5490 |
| Marshall County Accounting 1 E Main St 1, Marshalltown 50158 | (641) 754-6320 |
| Marshall County Comm Svc 101 E Main St, Marshalltown 50158 | (641) 754-6390 |
| Marshall County Comm-Veterans 1301 Summit St, Marshalltown 50158 | (641) 754-6335 |
| Marshall County Election Dept 1 E Main St 1, Marshalltown 50158 | (641) 754-6302 |
| Marshall County Engineer 101 E Church St, Marshalltown 50158 | (641) 754-6343 |
| Marshall County Engineer 121 E Main St, Marshalltown 50158 | (641) 754-6383 |
| Marshall County General Relief 101 E Main St, Marshalltown 50158 | (641) 754-6304 |
| Marshall County Is Dept 1 E Main St, Marshalltown 50158 | (641) 754-6328 |
| Marshall County Recorder 1 E Main St, Marshalltown 50158 | (641) 754-6355 |
| Marshall County Road Mntnc 901 E Boone St, Marshalltown 50158 | (641) 754-6344 |
| Marshall County Weed Commsnr 1 E Main St, Marshalltown 50158 | (641) 754-6370 |