| Zipcode | Community | City | State | Metro Area |
|---|---|---|---|---|
| 04986 | Knox | Thorndike | Maine | |
| 05252 | Kansas | East arlington | Vermont | Bennington VT |
| 12107 | Knox | Knox | New York | Albany-Schenectady-Troy NY |
| 16232 | Knox | Knox | Pennsylvania | |
| 27021 | King | King | North Carolina | Winston-Salem NC |
| 29006 | Kneece | Batesburg | South Carolina | Columbia SC |
| 31144 | Kennesaw | Kennesaw | Georgia | Atlanta-Sandy Springs-Roswell GA |
| 35573 | Kansas | Kansas | Alabama | Birmingham-Hoover AL |
| 36303 | Kinsey | Dothan | Alabama | Dothan AL |
| 37901 | Knox | Knoxville | Tennessee | Knoxville TN |
| 37934 | Knx | Knoxville | Tennessee | Knoxville TN |
| 37934 | Knox | Knoxville | Tennessee | Knoxville TN |
| 38462 | Kimmins | Hohenwald | Tennessee | |
| 39667 | Knoxo | Tylertown | Mississippi | |
| 46534 | Knox | Knox | Indiana | |
| 48006 | Kenockee | Avoca | Michigan | Detroit-Warren-Dearborn MI |
| 50575 | Knoke | Pomeroy | Iowa | |
| 53140 | Kenosha | Kenosha | Wisconsin | Chicago-Naperville-Elgin IL-IN-WI |
| 53141 | Kenosha | Kenosha | Wisconsin | Chicago-Naperville-Elgin IL-IN-WI |
| 53142 | Kenosha | Kenosha | Wisconsin | Chicago-Naperville-Elgin IL-IN-WI |
| 53143 | Kenosha | Kenosha | Wisconsin | Chicago-Naperville-Elgin IL-IN-WI |
| 53144 | Kenosha | Kenosha | Wisconsin | Chicago-Naperville-Elgin IL-IN-WI |
| 53158 | Kenosha | Pleasant prairie | Wisconsin | Chicago-Naperville-Elgin IL-IN-WI |
| 54162 | Kunesh | Pulaski | Wisconsin | Green Bay WI |
| 54946 | King | King | Wisconsin | |
| 58343 | Knox | Knox | North Dakota | |
| 59338 | Kinsey | Kinsey | Montana | |
| 61068 | Kings | Rochelle | Illinois | Rochelle IL |
| 61933 | Kansas | Kansas | Illinois | |
| 62851 | Keenes | Keenes | Illinois | |
| 63053 | Kimmswick | Kimmswick | Missouri | St. Louis MO-IL |
| 64116 | Kans cy | Kansas city | Missouri | Kansas City MO-KS |
| 64116 | Kansas cy | Kansas city | Missouri | Kansas City MO-KS |
| 65013 | Koenig | Belle | Missouri | |
| 65692 | Koshkonong | Koshkonong | Missouri | |
| 68956 | Kenesaw | Kenesaw | Nebraska | Hastings NE |
| 72082 | Kenseh | Kensett | Arkansas | Searcy AR |
| 74347 | Kansas | Kansas | Oklahoma | |
| 84036 | Kamas | Kamas | Utah | Summit Park UT |
| 84637 | Kanosh | Kanosh | Utah | |
| 96748 | Kaunakakai | Kaunakakai | Hawaii | Kahului-Wailuku-Lahaina HI |
| 97830 | Kinzua | Fossil | Oregon | |
| 98336 | Kosmos | Glenoma | Washington | Centralia WA |
| 99336 | Kennewick | Kennewick | Washington | Kennewick-Richland WA |
| 99337 | Kennewick | Kennewick | Washington | Kennewick-Richland WA |
| 99338 | Kennewick | Kennewick | Washington | Kennewick-Richland WA |
| 99603 | Kachemak | Homer | Alaska | |
| 99606 | Kokhanok | Iliamna | Alaska | |
| 99606 | Kokhonak | Iliamna | Alaska | |