| Abbeville | 23,507 | Abbeville | South Carolina | Greenville, SC-Asheville, NC | View → |
| Ada | 540,000 | Boise | Idaho | Boise-Pocatello, ID | View → |
| Adair | 7,000 | Greenfield | Iowa | Des Moines, IA | View → |
| Adams | 2,300 | Hettinger | North Dakota | Bismarck, ND | View → |
| Adams | 4,400 | Council | Idaho | Boise-Pocatello, ID | View → |
| Adams | 65,000 | Quincy | Illinois | Champaign-Peoria, IL | View → |
| Adams | 27,500 | West Union | Ohio | Cincinnati-Dayton, OH | View → |
| Adams | 560,000 | Brighton | Colorado | Denver-Colorado Springs, CO | View → |
| Adams | 20,000 | Adams | Wisconsin | Green Bay, WI-Duluth, MN | View → |
| Addison | 37,000 | Middlebury | Vermont | Burlington, VT | View → |
| Aitkin | 16,000 | Aitkin | Minnesota | Green Bay, WI-Duluth, MN | View → |
| Alamance | 171,000 | Burlington | North Carolina | Charlotte-Greensboro, NC | View → |
| Alamosa | 16,500 | Alamosa | Colorado | Denver-Colorado Springs, CO | View → |
| Alaska | 741,100 | Anchorage | Alaska | Anchorage, AK | View → |
| Albany | 313,000 | Albany | New York | Albany-Utica-Elmira, NY | View → |
| Albany | 39,000 | Laramie | Wyoming | Denver-Colorado Springs, CO | View → |
| Alexander | 38,000 | Taylorsville | North Carolina | Charlotte-Greensboro, NC | View → |
| Allamakee | 14,000 | Waukon | Iowa | Cedar Rapids, IA | View → |
| Allegan | 120,000 | Holland | Michigan | Grand Rapids, MI | View → |
| Allegany | 47,000 | Wellsville | New York | Buffalo-Rochester-Syracuse, NY | View → |
| Alleghany | 11,200 | Sparta | North Carolina | Charlotte-Greensboro, NC | View → |
| Allen | 103,300 | Lima | Ohio | Detroit, MI-Toledo, OH | View → |
| Anderson | 58,500 | Palestine | Texas | Dallas-Fort Worth, TX | View → |
| Anderson | 214,208 | Anderson | South Carolina | Greenville, SC-Asheville, NC | View → |
| Andrews | 19,500 | Andrews | Texas | El Paso-Odessa, TX | View → |
| Anne Arundel | 600,000 | Annapolis | Maryland | Baltimore, MD | View → |
| Anson | 23,000 | Wadesboro | North Carolina | Charlotte-Greensboro, NC | View → |
| Appanoose | 12,500 | Centerville | Iowa | Des Moines, IA | View → |
| Arapahoe | 680,000 | Aurora | Colorado | Denver-Colorado Springs, CO | View → |
| Archuleta | 15,000 | Pagosa Springs | Colorado | Denver-Colorado Springs, CO | View → |
| Armstrong | 2,000 | Claude | Texas | Amarillo, TX | View → |
| Ashe | 27,000 | West Jefferson | North Carolina | Charlotte-Greensboro, NC | View → |
| Ashland | 53,700 | Ashland | Ohio | Cleveland-Youngstown, OH | View → |
| Ashland | 16,000 | Ashland | Wisconsin | Green Bay, WI-Duluth, MN | View → |
| Ashtabula | 97,000 | Ashtabula | Ohio | Cleveland-Youngstown, OH | View → |
| Athens | 64,400 | Athens | Ohio | Charleston-Bluefield, WV | View → |
| Audubon | 5,600 | Audubon | Iowa | Des Moines, IA | View → |
| Auglaize | 46,400 | Wapakoneta | Ohio | Cincinnati-Dayton, OH | View → |
| Avery | 18,000 | Newland | North Carolina | Charlotte-Greensboro, NC | View → |
| Baca | 3,500 | Springfield | Colorado | Denver-Colorado Springs, CO | View → |
| Baltimore | 850,000 | Towson | Maryland | Baltimore, MD | View → |
| Baltimore City | 575,000 | Baltimore | Maryland | Baltimore, MD | View → |
| Banks | 20,300 | Homer | Georgia | Atlanta, GA | View → |
| Banner | 760 | Harrisburg | Nebraska | Denver-Colorado Springs, CO | View → |
| Bannock | 89,000 | Pocatello | Idaho | Boise-Pocatello, ID | View → |
| Barnes | 10,800 | Valley City | North Dakota | Fargo, ND | View → |
| Barnstable | 213,000 | Barnstable | Massachusetts | Boston-Springfield, MA | View → |
| Barrow | 89,000 | Winder | Georgia | Atlanta, GA | View → |
| Barry | 60,000 | Hastings | Michigan | Grand Rapids, MI | View → |
| Bartow | 111,500 | Cartersville | Georgia | Atlanta, GA | View → |
