| Business | Phone |
| Ohio State University Ext 202 Davis Ave, Marietta 45750 | (740) 376-7431 |
| Washington Cnty Fam & Child 202 Davis Ave, Marietta 45750 | (740) 376-7081 |
| Washington Cnty Victim Witness 205 Putnam St, Marietta 45750 | (740) 373-0043 |
| Washington County Brd-Election 205 Putnam St, Marietta 45750 | (740) 374-6828 |
| Washington County Commissioner 223 Putnam St, Marietta 45750 | (740) 373-6623 |
| Washington County Educational 115 Victory Pl, Marietta 45750 | (740) 374-5873 |
| Washington County Engineer 103 Westview Ave, Marietta 45750 | (740) 376-7430 |
| Washington County Fraud 1115 Gilman Ave, Marietta 45750 | (740) 374-7676 |
| Washington County Home County House Ln, Marietta 45750 | (740) 373-2028 |
| Washington County Juvenile Center 1699 Colegate Dr, Marietta 45750 | (740) 374-7453 |
| Washington County Office 706 Pike St # 1, Marietta 45750 | (740) 568-9015 |
| Washington County Open Dorr Hm 1608 Colegate Dr, Marietta 45750 | (740) 373-6741 |
| Washington County Soil & Water 21330 State Route 676, Marietta 45750 | (740) 373-4857 |
| Washington County Title Bureau 146 Gross St # B, Marietta 45750 | (740) 373-5517 |
| Washington County Veterans Svc 706 Pike St, Marietta 45750 | (740) 568-9009 |