| Business | Phone |
| Harrison Cnty Extension Agents 200 W Houston St, Marshall 75670 | (903) 935-4835 |
| Harrison County Commissioner 200 W Houston St # 313, Marshall 75670 | (903) 935-4808 |
| Harrison County Computer Prgrm 200 W Houston St, Marshall 75670 | (903) 935-4817 |
| Harrison County Fine Cllctn 200 W Houston St 318, Marshall 75670 | (903) 935-4803 |
| Harrison County Justice-Peace 200 W Houston St 125, Marshall 75670 | (903) 923-4011 |
| Harrison County Juvenile 1401 Warren Dr, Marshall 75672 | (903) 935-4871 |
| Harrison County Offices 200 W Houston St, Marshall 75670 | (903) 935-4800 |
| Harrison County Purchasing 200 W Houston St 107, Marshall 75670 | (903) 935-8412 |
| Harrison County Road & Bridge 3800 Five Notch Rd, Marshall 75672 | (903) 935-4868 |
| Harrison County Weight Permits 3800 Five Notch Rd, Marshall 75672 | (903) 935-4848 |
| Voter Registrar 415 E Burleson St, Marshall 75670 | (903) 935-4822 |
| Harrison County Court At Law 200 W Houston St, Marshall 75670 | (903) 935-8406 |
| Honorable Wayne Mc Whorter 200 W Houston St 315, Marshall 75670 | (903) 935-8401 |