Founded in 1820, Ray County is one of 114 counties in the state of Missouri. Historically, Ray County was formed from Howard County. The city of Richmond is the county seat. With FIPS code of 177, Ray County has a population of 23,008 and area of 570 square miles (1,476 km2).
List of all cities in Ray County, MO alphabetically
| City/Town | Postal Code | Area Code |
| Camden, MO | 64017 | 816/975 |
| Elmira, MO | 64062 | 816/975 |
| Hardin, MO | 64035 | 660 |
| Henrietta, MO | 64036 | 816/975 |
| Lawson, MO | 64062 | 816/975 |
| Orrick, MO | 64077 | 816/975 |
| Rayville, MO | 64084 | 660 |
| Richmond, MO | 64085 | 816/975 |