| Kiowa | 9,000 | Hobart | Oklahoma | Oklahoma City, OK | View → |
| Kiowa | 2,500 | Greensburg | Kansas | Wichita, KS | View → |
| Kit Carson | 7,000 | Burlington | Colorado | Denver-Colorado Springs, CO | View → |
| Kitsap | 280,000 | Bremerton | Washington | Seattle, WA | View → |
| Kittitas | 51,000 | Ellensburg | Washington | Seattle, WA | View → |
| Kittson | 4,200 | Hallock | Minnesota | Fargo, ND | View → |
| Klamath | 70,000 | Klamath Falls | Oregon | Medford, OR | View → |
| Kleberg | 30,800 | Kingsville | Texas | San Antonio-Corpus Christi, TX | View → |
| Klickitat | 23,000 | Goldendale | Washington | Portland, OR | View → |
| Knott | 15,300 | Hindman | Kentucky | Lexington-Bowling Green, KY | View → |
| Knox | 63,260 | Mount Vernon | Ohio | Columbus, OH | View → |
| Knox | 49,000 | Galesburg | Illinois | Davenport, IA-Moline, IL | View → |
| Knox | 36,000 | Vincennes | Indiana | Indianapolis-Fort Wayne, IN | View → |
| Knox | 495,000 | Knoxville | Tennessee | Knoxville-Chattanooga, TN | View → |
| Knox | 31,000 | Barbourville | Kentucky | Lexington-Bowling Green, KY | View → |
| Knox | 8,300 | Bloomfield | Nebraska | Omaha, NE-Sioux City, IA | View → |
| Knox | 3,700 | Edina | Missouri | Ottumwa, IA | View → |
| Knox | 40,000 | Rockland | Maine | Portland-Bangor, ME | View → |
| Knox | 3,400 | Benjamin | Texas | Wichita Falls, TX | View → |
| Koochiching | 12,500 | International Falls | Minnesota | Green Bay, WI-Duluth, MN | View → |
| Kootenai | 180,000 | Coeur d'Alene | Idaho | Spokane, WA | View → |
| Kosciusko | 81,000 | Warsaw | Indiana | Indianapolis-Fort Wayne, IN | View → |
| Kossuth | 14,500 | Algona | Iowa | Des Moines, IA | View → |
| La Crosse | 120,000 | La Crosse | Wisconsin | Madison-La Crosse, WI | View → |
| La Paz | 21,000 | Parker | Arizona | Phoenix-Tuscon, AZ | View → |
| La Plata | 60,000 | Durango | Colorado | Albuquerque, NM | View → |
| La Salle | 7,400 | Cotulla | Texas | San Antonio-Corpus Christi, TX | View → |
| La Salle | 14,800 | Jena | Louisiana | Shreveport, LA | View → |
| Labette | 20,000 | Parsons | Kansas | Wichita, KS | View → |
| Lac qui Parle | 6,900 | Madison | Minnesota | Minneapolis-St. Paul, MN | View → |
| Lackawanna | 211,000 | Scranton | Pennsylvania | Scranton, PA-Binghamton, NY | View → |
| Laclede | 36,000 | Lebanon | Missouri | Springfield, MO | View → |
| Lafayette | 8,600 | Mayo | Florida | Jacksonville-Tallahassee, FL | View → |
| Lafayette | 32,000 | Lexington | Missouri | Kansas City, MO | View → |
| Lafayette | 17,000 | Darlington | Wisconsin | Madison-La Crosse, WI | View → |
| Lafayette | 56,000 | Oxford | Mississippi | Memphis, TN | View → |
| Lafayette | 246,000 | Lafayette | Louisiana | New Orleans-Baton Rouge, LA | View → |
| Lafayette | 7,000 | Lewisville | Arkansas | Shreveport, LA | View → |
| Lafourche | 97,000 | Thibodaux | Louisiana | New Orleans-Baton Rouge, LA | View → |
| LaGrange | 40,000 | LaGrange | Indiana | Indianapolis-Fort Wayne, IN | View → |
| Lake | 720,000 | Waukegan | Illinois | Chicago, IL | View → |
| Lake | 490,000 | Hammond | Indiana | Chicago, IL | View → |
| Lake | 236,000 | Mentor | Ohio | Cleveland-Youngstown, OH | View → |
| Lake | 8,500 | Leadville | Colorado | Denver-Colorado Springs, CO | View → |
| Lake | 11,000 | Two Harbors | Minnesota | Green Bay, WI-Duluth, MN | View → |
| Lake | 8,000 | Lakeview | Oregon | Medford, OR | View → |
| Lake | 31,000 | Polson | Montana | Missoula-Billings-Butte, MT | View → |
| Lake | 403,000 | Clermont | Florida | Orlando-Gainesville, FL | View → |
| Lake | 7,400 | Tiptonville | Tennessee | Paducah, KY | View → |
| Lake | 65,000 | Lakeport | California | San Francisco, CA | View → |
