Founded in 1834, Henry County is one of 114 counties in the state of Missouri. Historically, Henry County was formed from Lillard (now Lafayette) County. The city of Clinton is the county seat. With FIPS code of 83, Henry County has a population of 22,206 and area of 702 square miles (1,818 km2).
List of all cities in Henry County, MO alphabetically
| City/Town | Postal Code | Area Code |
| Blairstown, MO | 64726 | 660 |
| Calhoun, MO | 65323 | 660 |
| Clinton, MO | 64735 | 660 |
| Creighton, MO | 64739 | 816/975 |
| Deepwater, MO | 64740 | 660 |
| Hartwell, MO | 64788 | 660 |
| Montrose, MO | 64770 | 660 |
| Urich, MO | 64788 | 660 |
| Windsor, MO | 65360 | 660 |