| Sevier | 102,000 | Sevierville | Tennessee | Knoxville-Chattanooga, TN | View → |
| Sevier | 21,500 | Richfield | Utah | Salt Lake City, UT | View → |
| Sevier | 17,000 | De Queen | Arkansas | Shreveport, LA | View → |
| Seward | 17,000 | Seward | Nebraska | Lincoln, NE | View → |
| Seward | 21,000 | Liberal | Kansas | Wichita, KS | View → |
| Shackelford | 3,200 | Albany | Texas | Lubbock-Abilene, TX | View → |
| Shannon | 8,000 | Eminence | Missouri | Springfield, MO | View → |
| Sharkey | 4,300 | Rolling Fork | Mississippi | Jackson, MS | View → |
| Sharp | 18,000 | Cherokee Village | Arkansas | Paducah, KY | View → |
| Shasta | 182,000 | Redding | California | Sacramento, CA | View → |
| Shawano | 40,500 | Shawano | Wisconsin | Green Bay, WI-Duluth, MN | View → |
| Shawnee | 180,000 | Topeka | Kansas | Kansas City, MO | View → |
| Sheboygan | 116,000 | Sheboygan | Wisconsin | Milwaukee, WI | View → |
| Shelby | 229,500 | Alabaster | Alabama | Birmingham-Huntsville, AL | View → |
| Shelby | 21,500 | Shelbyville | Illinois | Champaign-Peoria, IL | View → |
| Shelby | 49,000 | Sidney | Ohio | Cincinnati-Dayton, OH | View → |
| Shelby | 45,000 | Shelbyville | Indiana | Indianapolis-Fort Wayne, IN | View → |
| Shelby | 48,000 | Shelbyville | Kentucky | Louisville, KY-Evansville, IN | View → |
| Shelby | 925,000 | Memphis | Tennessee | Memphis, TN | View → |
| Shelby | 12,000 | Harlan | Iowa | Omaha, NE-Sioux City, IA | View → |
| Shelby | 6,200 | Shelbina | Missouri | Ottumwa, IA | View → |
| Shelby | 25,000 | Center | Texas | Shreveport, LA | View → |
| Shenandoah | 44,000 | Woodstock | Virginia | Washington, DC | View → |
| Sherburne | 98,000 | Elk River | Minnesota | Minneapolis-St. Paul, MN | View → |
| Sheridan | 3,700 | Plentywood | Montana | Bismarck, ND | View → |
| Sheridan | 1,300 | McClusky | North Dakota | Bismarck, ND | View → |
| Sheridan | 31,000 | Sheridan | Wyoming | Casper, WY | View → |
| Sheridan | 5,000 | Gordon | Nebraska | Denver-Colorado Springs, CO | View → |
| Sheridan | 2,500 | Hoxie | Kansas | Wichita, KS | View → |
| Sherman | 3,000 | Stratford | Texas | Amarillo, TX | View → |
| Sherman | 3,000 | Loup City | Nebraska | Lincoln, NE | View → |
| Sherman | 1,700 | Moro | Oregon | Portland, OR | View → |
| Sherman | 5,900 | Goodland | Kansas | Wichita, KS | View → |
| Shiawassee | 68,000 | Owosso | Michigan | Detroit, MI-Toledo, OH | View → |
| Shoshone | 13,000 | Wallace | Idaho | Spokane, WA | View → |
| Sibley | 15,000 | Gaylord | Minnesota | Minneapolis-St. Paul, MN | View → |
| Sierra | 11,500 | Truth or Consequences | New Mexico | Albuquerque, NM | View → |
| Sierra | 3,000 | Downieville | California | Sacramento, CA | View → |
| Silver Bow | 34,000 | Butte | Montana | Missoula-Billings-Butte, MT | View → |
| Simpson | 27,000 | Mendenhall | Mississippi | Jackson, MS | View → |
| Simpson | 18,000 | Franklin | Kentucky | Nashville, TN | View → |
| Sioux | 4,200 | Fort Yates | North Dakota | Bismarck, ND | View → |
| Sioux | 1,300 | Harrison | Nebraska | Denver-Colorado Springs, CO | View → |
| Sioux | 35,000 | Orange City | Iowa | Omaha, NE-Sioux City, IA | View → |
| Siskiyou | 43,000 | Yreka | California | Medford, OR | View → |
| Skagit | 130,000 | Mount Vernon | Washington | Seattle, WA | View → |
| Skamania | 12,000 | Stevenson | Washington | Portland, OR | View → |
| Slope | 800 | Amidon | North Dakota | Bismarck, ND | View → |
| Smith | 245,000 | Tyler | Texas | Dallas-Fort Worth, TX | View → |
| Smith | 16,000 | Raleigh | Mississippi | Jackson, MS | View → |
