| Business | Phone |
| Court Attendant 17 E Main St, Marshalltown 50158 | (641) 754-1615 |
| Iowa Associate Court 19 E Main St, Marshalltown 50158 | (641) 754-6310 |
| Iowa District Clerk Of Court 17 E Main St, Marshalltown 50158 | (641) 754-1602 |
| Public Defender Office 30 S 1st Ave, Marshalltown 50158 | (641) 752-0083 |
| Judicial Magistrate 17 E Main St, Marshalltown 50158 | (641) 754-1622 |
| Work Release Ctr 1401 S 17th Ave, Marshalltown 50158 | (641) 753-5571 |