| Burke | 91,000 | Morganton | North Carolina | Charlotte-Greensboro, NC | View → |
| Burleigh | 100,000 | Bismarck | North Dakota | Bismarck, ND | View → |
| Burleson | 20,500 | Caldwell | Texas | Austin-Waco, TX | View → |
| Burnet | 50,000 | Burnet | Texas | Austin-Waco, TX | View → |
| Butler | 15,000 | Allison | Iowa | Cedar Rapids, IA | View → |
| Butler | 391,500 | Hamilton | Ohio | Cincinnati-Dayton, OH | View → |
| Butte | 2,600 | Arco | Idaho | Boise-Pocatello, ID | View → |
| Butts | 25,000 | Jackson | Georgia | Atlanta, GA | View → |
| Cabarrus | 235,000 | Concord | North Carolina | Charlotte-Greensboro, NC | View → |
| Cabell | 91,000 | Huntington | West Virginia | Charleston-Bluefield, WV | View → |
| Caldwell | 44,000 | Lockhart | Texas | Austin-Waco, TX | View → |
| Caldwell | 83,000 | Lenoir | North Carolina | Charlotte-Greensboro, NC | View → |
| Caledonia | 29,000 | St. Johnsbury | Vermont | Burlington, VT | View → |
| Calhoun | 116,400 | Anniston | Alabama | Birmingham-Huntsville, AL | View → |
| Calhoun | 7,100 | Grantsville | West Virginia | Charleston-Bluefield, WV | View → |
| Calhoun | 14,119 | St. Matthews | South Carolina | Columbia, SC | View → |
| Calhoun | 9,600 | Rockwell City | Iowa | Des Moines, IA | View → |
| Calhoun | 132,000 | Battle Creek | Michigan | Grand Rapids, MI | View → |
| Calumet | 52,000 | Chilton | Wisconsin | Green Bay, WI-Duluth, MN | View → |
| Camas | 1,100 | Fairfield | Idaho | Boise-Pocatello, ID | View → |
| Campbell | 1,400 | Mound City | South Dakota | Bismarck, ND | View → |
| Campbell | 47,000 | Gillette | Wyoming | Casper, WY | View → |
| Campbell | 95,000 | Newport | Kentucky | Cincinnati-Dayton, OH | View → |
| Canyon | 245,000 | Nampa | Idaho | Boise-Pocatello, ID | View → |
| Carbon | 15,000 | Rawlins | Wyoming | Denver-Colorado Springs, CO | View → |
| Caribou | 7,400 | Soda Springs | Idaho | Boise-Pocatello, ID | View → |
| Carlton | 37,000 | Cloquet | Minnesota | Green Bay, WI-Duluth, MN | View → |
| Caroline | 35,000 | Denton | Maryland | Baltimore, MD | View → |
| Carroll | 120,000 | Carrollton | Georgia | Atlanta, GA | View → |
| Carroll | 175,000 | Westminster | Maryland | Baltimore, MD | View → |
| Carroll | 27,400 | Carrollton | Ohio | Cleveland-Youngstown, OH | View → |
| Carroll | 15,000 | Savanna | Illinois | Davenport, IA-Moline, IL | View → |
| Carroll | 20,000 | Carroll | Iowa | Des Moines, IA | View → |
| Carson | 6,200 | Panhandle | Texas | Amarillo, TX | View → |
| Carter | 27,000 | Grayson | Kentucky | Charleston-Bluefield, WV | View → |
| Cass | 12,000 | Virginia | Illinois | Champaign-Peoria, IL | View → |
| Cass | 51,000 | Dowagiac | Michigan | Chicago, IL | View → |
| Cass | 195,000 | Fargo | North Dakota | Fargo, ND | View → |
| Cassia | 25,000 | Burley | Idaho | Boise-Pocatello, ID | View → |
| Castro | 7,700 | Dimmitt | Texas | Amarillo, TX | View → |
| Caswell | 23,000 | Yanceyville | North Carolina | Charlotte-Greensboro, NC | View → |
| Catawba | 160,000 | Hickory | North Carolina | Charlotte-Greensboro, NC | View → |
| Catron | 3,500 | Reserve | New Mexico | Albuquerque, NM | View → |
| Cattaraugus | 76,000 | Olean | New York | Buffalo-Rochester-Syracuse, NY | View → |
| Cavalier | 3,800 | Langdon | North Dakota | Fargo, ND | View → |
| Cayuga | 75,000 | Auburn | New York | Buffalo-Rochester-Syracuse, NY | View → |
| Cecil | 105,000 | Elkton | Maryland | Baltimore, MD | View → |
| Cedar | 18,000 | Tipton | Iowa | Cedar Rapids, IA | View → |
| Cerro Gordo | 43,000 | Mason City | Iowa | Cedar Rapids, IA | View → |
| Chaffee | 21,000 | Salida | Colorado | Denver-Colorado Springs, CO | View → |
