| Kappa, IL (Village) |
| Karlsruhe, ND (City) |
| Karlsruhe, ND (Township) |
| Karlstad, MN (City) |
| Karnak, IL (Village) |
| Karnes City, TX (City) |
| Karnes County, TX (County) |
| Karns City, PA (Borough) |
| Karthaus Township, PA (Township) |
| Kasaan, AK (City) |
| Kaser, NY (Village) |
| Kaskaskia, IL (Village) |
| Kaskaskia Township, IL (Township) |
| Kasota, MN (City) |
| Kasota, MN (Township) |
