Cities, Towns, Neighborhoods & Other Populated Places in Franklin County.
| City Name | Title | County | Population |
|---|---|---|---|
| Pacific | City in Missouri | 7,229 | |
| Sullivan | City in Missouri | 7,127 | |
| Saint Clair | City in Franklin County, Missouri, United States | 4,712 | |
| Gray Summit | Census designated place | 2,701 | |
| Villa Ridge | Census designated place | 2,636 | |
| Washington | City in Franklin County, Missouri | 2,417 | |
| New Haven | Town in Missouri | 2,072 | |
| Union | City in and county seat of Franklin County, Missouri, United States | 1,980 | |
| Gerald | City in Missouri, United States | 1,313 | |
| Parkway | City in Franklin County, Missouri, United States of America | 509 | |
| Oak Grove Village | Human settlement in Franklin County, Missouri, United States of America | 472 | |
| Berger | City in Franklin County, Missouri, United States | 221 | |
| Leslie | Village in Missouri, USA | 170 | |
| Miramiguoa Park | Human settlement in Franklin County, Missouri, United States of America | 121 |