| Louisa | 11,000 | Wapello | Iowa | Davenport, IA-Moline, IL | View → |
| Louisa | 39,000 | Louisa | Virginia | Richmond, VA | View → |
| Loup | 600 | Taylor | Nebraska | Lincoln, NE | View → |
| Love | 11,000 | Marietta | Oklahoma | Sherman, TX | View → |
| Loving | 100 | Mentone | Texas | El Paso-Odessa, TX | View → |
| Lowndes | 120,000 | Valdosta | Georgia | Jacksonville-Tallahassee, FL | View → |
| Lowndes | 9,600 | Hayneville | Alabama | Montgomery-Dothan, AL | View → |
| Lowndes | 57,000 | Columbus | Mississippi | Tupelo-Meridian-Greenwood, MS | View → |
| Lubbock | 317,000 | Lubbock | Texas | Lubbock-Abilene, TX | View → |
| Lucas | 8,700 | Chariton | Iowa | Des Moines, IA | View → |
| Lucas | 427,000 | Toledo | Ohio | Detroit, MI-Toledo, OH | View → |
| Luce | 6,500 | Newberry | Michigan | Traverse City, MI | View → |
| Lumpkin | 35,000 | Dahlonega | Georgia | Atlanta, GA | View → |
| Luna | 24,500 | Deming | New Mexico | Albuquerque, NM | View → |
| Lunenburg | 12,000 | Victoria | Virginia | Richmond, VA | View → |
| Luzerne | 316,000 | Wilkes-Barre | Pennsylvania | Scranton, PA-Binghamton, NY | View → |
| Lycoming | 111,000 | Williamsport | Pennsylvania | Scranton, PA-Binghamton, NY | View → |
| Lyman | 3,800 | Presho | South Dakota | Sioux Falls-Rapid City, SD | View → |
| Lynchburg City | 80,000 | Lynchburg | Virginia | Roanoke-Harrisonburg, VA | View → |
| Lynn | 5,700 | Tahoka | Texas | Lubbock-Abilene, TX | View → |
| Lyon | 62,000 | Fernley | Nevada | Las Vegas-Reno, NV | View → |
| Lyon | 25,000 | Marshall | Minnesota | Minneapolis-St. Paul, MN | View → |
| Lyon | 8,300 | Eddyville | Kentucky | Paducah, KY | View → |
| Lyon | 12,000 | Rock Rapids | Iowa | Sioux Falls-Rapid City, SD | View → |
| Lyon | 32,000 | Emporia | Kansas | Wichita, KS | View → |
| Mackinac | 11,000 | St. Ignace | Michigan | Traverse City, MI | View → |
| Macomb | 870,000 | Warren | Michigan | Detroit, MI-Toledo, OH | View → |
| Macon | 105,000 | Decatur | Illinois | Champaign-Peoria, IL | View → |
| Macon | 38,000 | Franklin | North Carolina | Greenville, SC-Asheville, NC | View → |
| Macon | 13,000 | Oglethorpe | Georgia | Macon-Columbus, GA | View → |
| Macon | 18,100 | Tuskegee | Alabama | Montgomery-Dothan, AL | View → |
| Macon | 26,000 | Lafayette | Tennessee | Nashville, TN | View → |
| Macon | 15,500 | Macon | Missouri | Ottumwa, IA | View → |
| Macoupin | 44,500 | Carlinville | Illinois | St. Louis, MO | View → |
| Madera | 163,000 | Madera | California | Fresno, CA | View → |
| Madison | 32,000 | Danielsville | Georgia | Atlanta, GA | View → |
| Madison | 14,200 | Madisonville | Texas | Austin-Waco, TX | View → |
| Madison | 400,000 | Huntsville | Alabama | Birmingham-Huntsville, AL | View → |
| Madison | 55,000 | Rexburg | Idaho | Boise-Pocatello, ID | View → |
| Madison | 72,000 | Oneida | New York | Buffalo-Rochester-Syracuse, NY | View → |
| Madison | 44,700 | London | Ohio | Columbus, OH | View → |
| Madison | 16,500 | Winterset | Iowa | Des Moines, IA | View → |
| Madison | 22,000 | Marshall | North Carolina | Greenville, SC-Asheville, NC | View → |
| Madison | 130,000 | Anderson | Indiana | Indianapolis-Fort Wayne, IN | View → |
| Madison | 11,000 | Tallulah | Louisiana | Jackson, MS | View → |
| Madison | 110,000 | Ridgeland | Mississippi | Jackson, MS | View → |
| Madison | 18,000 | Madison | Florida | Jacksonville-Tallahassee, FL | View → |
| Madison | 94,000 | Richmond | Kentucky | Lexington-Bowling Green, KY | View → |
| Madison | 98,000 | Jackson | Tennessee | Memphis, TN | View → |
| Madison | 8,500 | Virginia City | Montana | Missoula-Billings-Butte, MT | View → |
