| Dakota | 440,000 | Eagan | Minnesota | Minneapolis-St. Paul, MN | View → |
| Dakota | 20,800 | South Sioux City | Nebraska | Omaha, NE-Sioux City, IA | View → |
| Dale | 49,300 | Ozark | Alabama | Montgomery-Dothan, AL | View → |
| Dallam | 6,700 | Dalhart | Texas | Amarillo, TX | View → |
| Dallas | 2,670,000 | Dallas | Texas | Dallas-Fort Worth, TX | View → |
| Dallas | 106,000 | Adel | Iowa | Des Moines, IA | View → |
| Dallas | 7,000 | Fordyce | Arkansas | Little Rock, AR | View → |
| Dallas | 38,500 | Selma | Alabama | Montgomery-Dothan, AL | View → |
| Dallas | 17,000 | Buffalo | Missouri | Springfield, MO | View → |
| Dane | 560,000 | Madison | Wisconsin | Madison-La Crosse, WI | View → |
| Daniels | 1,800 | Scobey | Montana | Bismarck, ND | View → |
| Danville City | 39,000 | Danville | Virginia | Roanoke-Harrisonburg, VA | View → |
| Dare | 38,000 | Kill Devil Hills | North Carolina | Norfolk, VA-Salisbury, MD | View → |
| Darke | 50,500 | Greenville | Ohio | Cincinnati-Dayton, OH | View → |
| Darlington | 65,000 | Darlington | South Carolina | Charleston-Florence, SC | View → |
| Dauphin | 280,000 | Harrisburg | Pennsylvania | Harrisburg, PA | View → |
| Davidson | 168,000 | Lexington | North Carolina | Charlotte-Greensboro, NC | View → |
| Davidson | 725,000 | Nashville | Tennessee | Nashville, TN | View → |
| Davie | 44,000 | Mocksville | North Carolina | Charlotte-Greensboro, NC | View → |
| Daviess | 34,000 | Washington | Indiana | Indianapolis-Fort Wayne, IN | View → |
| Daviess | 8,300 | Gallatin | Missouri | Kansas City, MO | View → |
| Daviess | 103,000 | Owensboro | Kentucky | Louisville, KY-Evansville, IN | View → |
| Davis | 9,100 | Bloomfield | Iowa | Ottumwa, IA | View → |
| Davis | 370,000 | Layton | Utah | Salt Lake City, UT | View → |
| Davison | 20,000 | Mitchell | South Dakota | Sioux Falls-Rapid City, SD | View → |
| Dawes | 8,800 | Chadron | Nebraska | Denver-Colorado Springs, CO | View → |
| Dawson | 27,000 | Dawsonville | Georgia | Atlanta, GA | View → |
| Dawson | 24,000 | Lexington | Nebraska | Lincoln, NE | View → |
| Dawson | 13,000 | Lamesa | Texas | Lubbock-Abilene, TX | View → |
| Dawson | 8,500 | Glendive | Montana | Missoula-Billings-Butte, MT | View → |
| Day | 5,300 | Webster | South Dakota | Sioux Falls-Rapid City, SD | View → |
| DC | 670,900 | Washington, D.C. | District of Columbia | Washington, DC | View → |
| De Baca | 1,800 | Fort Sumner | New Mexico | Albuquerque, NM | View → |
| De Soto | 27,000 | Mansfield | Louisiana | Shreveport, LA | View → |
| Deaf Smith | 19,000 | Hereford | Texas | Amarillo, TX | View → |
| Dearborn | 49,000 | Lawrenceburg | Indiana | Cincinnati-Dayton, OH | View → |
| Decatur | 7,900 | Leon | Iowa | Des Moines, IA | View → |
| Decatur | 27,000 | Greensburg | Indiana | Indianapolis-Fort Wayne, IN | View → |
| Decatur | 28,000 | Bainbridge | Georgia | Jacksonville-Tallahassee, FL | View → |
| Decatur | 12,000 | Parsons | Tennessee | Nashville, TN | View → |
| Decatur | 2,800 | Oberlin | Kansas | Wichita, KS | View → |
| Deer Lodge | 9,500 | Anaconda | Montana | Missoula-Billings-Butte, MT | View → |
| Defiance | 38,100 | Defiance | Ohio | Detroit, MI-Toledo, OH | View → |
| Dekalb | 20,500 | Smithville | Tennessee | Nashville, TN | View → |
| DeKalb | 760,000 | Decatur | Georgia | Atlanta, GA | View → |
| DeKalb | 71,600 | Fort Payne | Alabama | Birmingham-Huntsville, AL | View → |
| DeKalb | 105,000 | DeKalb | Illinois | Chicago, IL | View → |
| DeKalb | 43,000 | Auburn | Indiana | Indianapolis-Fort Wayne, IN | View → |
| DeKalb | 13,000 | Maysville | Missouri | Kansas City, MO | View → |
| Del Norte | 27,000 | Crescent City | California | Medford, OR | View → |
