| Zipcode | Community | City | State | Metro Area |
|---|---|---|---|---|
| 13302 | Kasoag | Altmar | New York | Syracuse NY |
| 16923 | Keech | Genesee | Pennsylvania | |
| 17959 | Kaska | New philadelphia | Pennsylvania | Pottsville PA |
| 22947 | Keswick | Keswick | Virginia | Charlottesville VA |
| 24265 | Keokee | Keokee | Virginia | |
| 36426 | Keego | Brewton | Alabama | |
| 39090 | Kosciusko | Kosciusko | Mississippi | |
| 40906 | Kayjay | Barbourville | Kentucky | London KY |
| 50136 | Keswick | Keswick | Iowa | |
| 52565 | Keosauqua | Keosauqua | Iowa | |
| 52573 | Keosauqua | Mount sterling | Iowa | |
| 52632 | Keokuk | Keokuk | Iowa | Fort Madison-Keokuk IA-IL-MO |
| 56655 | Kego | Longville | Minnesota | Brainerd MN |
| 59114 | K o a | Billings | Montana | Billings MT |
| 63445 | Kahoka | Kahoka | Missouri | Fort Madison-Keokuk IA-IL-MO |
| 64116 | Kc | Kansas city | Missouri | Kansas City MO-KS |
| 64116 | K c | Kansas city | Missouri | Kansas City MO-KS |
| 64121 | K c | Kansas city | Missouri | Kansas City MO-KS |
| 64148 | K c | Kansas city | Missouri | Kansas City MO-KS |
| 64171 | K c | Kansas city | Missouri | Kansas City MO-KS |
| 64188 | K c | Kansas city | Missouri | Kansas City MO-KS |
| 64999 | K c | Kansas city | Missouri | Kansas City MO-KS |
| 67067 | Kechi | Kechi | Kansas | Wichita KS |
| 67070 | Kiowa | Kiowa | Kansas | |
| 72083 | Keo | Keo | Arkansas | Little Rock-North Little Rock-Conway AR |
| 73947 | Keyes | Keyes | Oklahoma | |
| 74553 | Kiowa | Kiowa | Oklahoma | McAlester OK |
| 75831 | Keechi | Buffalo | Texas | |
| 76653 | Kosse | Kosse | Texas | |
| 80117 | Kiowa | Kiowa | Colorado | Denver-Aurora-Lakewood CO |
| 82639 | Kaycee | Kaycee | Wyoming | |
| 83539 | Kooskia | Kooskia | Idaho | |
| 87052 | Kewa | Santo domingo pueblo | New Mexico | Albuquerque NM |
| 93237 | Kaweah | Kaweah | California | Visalia-Porterville CA |
| 95328 | Keyes | Keyes | California | Modesto CA |
| 96001 | Keswick | Redding | California | Redding CA |
| 96730 | Kaaawa | Kaaawa | Hawaii | Urban Honolulu HI |
| 96731 | Kahuku | Kahuku | Hawaii | Urban Honolulu HI |
| 96739 | Keauhou | Keauhou | Hawaii | Hilo HI |
| 96743 | Kawaihae | Kamuela | Hawaii | Hilo HI |
| 96749 | Keaau | Keaau | Hawaii | Hilo HI |
| 96752 | Kekaha | Kekaha | Hawaii | Kapaa HI |
| 96753 | Kihei | Kihei | Hawaii | Kahului-Wailuku-Lahaina HI |
| 96944 | Kosae | Kosrae | Federated States of | |
| 99138 | Kewa | Inchelium | Washington | |
| 99753 | Koyuk | Koyuk | Alaska | |
| 99754 | Koyukuk | Koyukuk | Alaska | |
| 99830 | Kake | Kake | Alaska | |