| Grundy County | pop. 10,536 |
| County Commission Meets: | Each Tuesday |
| County Courthouse: | Trenton, MO 64683 |
| Phone: | (660) 359-6305 |
| Presiding Commissioner: | Kenny Roberts |
| Associate Commissioner: | Gene Wyant |
| Associate Commissioner: | H.L. "Bud" Cox |
| County Clerk: | L.D. Gibson |
| Circuit Clerk & Ex-officio Recorder: | Beatrice Shaw |
| Prosecuting Attorney: | Chris Raynes |
| Sheriff: | Greg Coon |
| Associate Circuit Judge, Div. II: | Steve Hudson |
| Treasurer & Ex-officio Collector: | Colleen Kidd |
| Coroner: | Tom Eads |
| Health Department: | Kim Oaks, Elizabeth Gibson |
| Assessor: | Andrea Steinhoff |
| Public Administrator: | Joyce Tuttle |