| Sullivan County | pop. 6,326 |
| County Commission Meets: | Each Tuesday 1:00 - 4:30p.m. |
| County Courthouse: | Milan, MO 63556 |
| Phone: | (660) 265-3786 |
| Presiding Commissioner: | Chris May |
| Associate Commissioner: | James Howard |
| Associate Commissioner: | Lowell Tucker |
| County Clerk: | Mike Hepler |
| Circuit Clerk & Ex-officio Recorder: | John "Ike" Morehead |
| Prosecuting Attorney: | Jim Spencer |
| Sheriff: | Bill Hayes |
| Associate Circuit Judge, Div. II: | Jeffrey D. Sayre |
| Treasurer & Ex-officio Collector: | Debbie Schnelle |
| Coroner: | Dale Essmyer |
| Health Department: | Connie Michael |
| Assessor: | Gary Hosteter |
| Public Administrator: | Rhonda Nye Frazier |