| население | |
| Frankfort | 154 |
| Frankfort Fire Department |
 | Huron Regional Airport | ~ 55.13 км |
| Aberdeen Regional Airport | ~ 64.15 км |
| Watertown Regional Airport | ~ 91.03 км |
| Britton Municipal Airport | ~ 113.25 км |
| Mitchell Municipal Airport | ~ 124.51 км |
| Brookings Regional Airport | ~ 134.24 км |
| Madison Municipal Airport | ~ 136.42 км |
| Ashley Municipal Airport | ~ 151.22 км |
| Pierre Regional Airport | ~ 165.82 км |
