| Zipcode | Community | City | State | Metro Area |
|---|---|---|---|---|
| 02836 | Kenyon | Kenyon | Rhode Island | Providence-Warwick RI-MA |
| 03431 | Keene | Keene | New Hampshire | Keene NH |
| 03435 | Keene | Keene | New Hampshire | Keene NH |
| 12942 | Keene | Keene | New York | |
| 12943 | Keene | Keene valley | New York | |
| 14856 | Kanona | Kanona | New York | Corning NY |
| 16735 | Kane | Kane | Pennsylvania | Bradford PA |
| 16923 | Kinney | Genesee | Pennsylvania | |
| 17842 | Kissimmee | Middleburg | Pennsylvania | Selinsgrove PA |
| 22946 | Keene | Keene | Virginia | Charlottesville VA |
| 25248 | Kenna | Kenna | West Virginia | |
| 26405 | Kasson | Moatsville | West Virginia | |
| 34758 | Kissimmee | Kissimmee | Florida | Orlando-Kissimmee-Sanford FL |
| 34759 | Kissimmee | Kissimmee | Florida | Lakeland-Winter Haven FL |
| 39643 | Kokomo | Kokomo | Mississippi | |
| 40339 | Keene | Keene | Kentucky | Lexington-Fayette KY |
| 41858 | Kona | Whitesburg | Kentucky | |
| 43828 | Keene | Keene | Ohio | Coshocton OH |
| 46901 | Kokomo | Kokomo | Indiana | Kokomo IN |
| 46902 | Kokomo | Kokomo | Indiana | Kokomo IN |
| 46903 | Kokomo | Kokomo | Indiana | Kokomo IN |
| 46904 | Kokomo | Kokomo | Indiana | Kokomo IN |
| 46935 | Kewanna | Grass creek | Indiana | |
| 46939 | Kewanna | Kewanna | Indiana | |
| 47575 | Kyana | Saint anthony | Indiana | Jasper IN |
| 50447 | Kanawha | Kanawha | Iowa | |
| 53040 | Kewaskum | Kewaskum | Wisconsin | Milwaukee-Waukesha-West Allis WI |
| 54130 | Kaukauna | Kaukauna | Wisconsin | Appleton WI |
| 54131 | Kaukauna | Freedom | Wisconsin | Appleton WI |
| 54135 | Keshena | Keshena | Wisconsin | Shawano WI |
| 54216 | Kewaunee | Kewaunee | Wisconsin | Green Bay WI |
| 54537 | Kennan | Kennan | Wisconsin | |
| 55758 | Kinney | Kinney | Minnesota | Duluth MN-WI |
| 55944 | Kasson | Kasson | Minnesota | Rochester MN |
| 55946 | Kenyon | Kenyon | Minnesota | Red Wing MN |
| 58847 | Keene | Keene | North Dakota | |
| 61443 | Kewanee | Kewanee | Illinois | Davenport-Moline-Rock Island IA-IL |
| 61749 | Kenney | Kenney | Illinois | Bloomington IL |
| 62054 | Kane | Kane | Illinois | |
| 63860 | Kewanee | Kewanee | Missouri | |
| 68924 | Keene | Axtell | Nebraska | Kearney NE |
| 76369 | Kamay | Kamay | Texas | Wichita Falls TX |
| 77452 | Kenney | Kenney | Texas | Houston-The Woodlands-Sugar Land TX |
| 77979 | Kamey | Port lavaca | Texas | Port Lavaca TX |
| 78505 | Kane | Mcallen | Texas | McAllen-Edinburg-Mission TX |
| 81041 | Koen | Granada | Colorado | |
| 81049 | Kim | Kim | Colorado | |
| 83536 | Kamiah | Kamiah | Idaho | |
| 83634 | Kuna | Kuna | Idaho | Boise City ID |
| 88122 | Kenna | Kenna | New Mexico | Portales NM |
| 93531 | Keene | Keene | California | Bakersfield CA |
| 96744 | Kaneohe | Kaneohe | Hawaii | Urban Honolulu HI |
| 96759 | Kunia | Kunia | Hawaii | Urban Honolulu HI |
| 97627 | Keno | Keno | Oregon | Klamath Falls OR |
| 99320 | Kiona | Benton city | Washington | Kennewick-Richland WA |
| 99336 | Kenn | Kennewick | Washington | Kennewick-Richland WA |
| 99611 | Kenai | Kenai | Alaska | |
| 99635 | Kenai | Nikiski | Alaska | |
| 99749 | Kiana | Kiana | Alaska | |
| 99901 | Kasaan | Ketchikan | Alaska | Ketchikan AK |
| 99950 | Kasaan | Ketchikan | Alaska | Ketchikan AK |