
Shelby County
- State:
- Missouri
- County Seat:
- Shelbyville
Shelby County's estimated 2025 population is 5,801 with a growth rate of -1.11% in the past year according to the most recent United States census data. Shelby County is the 105th largest county in Missouri. The 2010 population was 6,364 and has seen a growth of -8.85% since that time.