| Zipcode | Community | City | State | Metro Area |
|---|---|---|---|---|
| 10952 | Kaser | Monsey | New York | New York-Newark-Jersey City NY-NJ-PA |
| 39827 | Karo | Cairo | Georgia | |
| 39828 | Karo | Cairo | Georgia | |
| 45643 | Kerr | Kerr | Ohio | Point Pleasant WV-OH |
| 46738 | Keyser | Garrett | Indiana | Auburn IN |
| 54552 | Kaiser | Park falls | Wisconsin | |
| 57559 | Kary | Murdo | South Dakota | |
| 65047 | Kaiser | Kaiser | Missouri | |
| 72142 | Kerr | Scott | Arkansas | Little Rock-North Little Rock-Conway AR |
| 72351 | Keiser | Keiser | Arkansas | Blytheville AR |
| 78550 | Kayare | Harlingen | Texas | Brownsville-Harlingen TX |
| 96939 | Koror | Palau | Palau | |
| 96944 | Kosrae | Kosrae | Federated States of | |
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