| Site | State | Type | Population |
|---|---|---|---|
| Dale, PA | Pennsylvania | City | 1210 |
| Daleville, AL | Alabama | City | 5125 |
| Dallas Center, IA | Iowa | City | 1915 |
| Dallas County, AR | Arkansas | County | 6308 |
| Dallas County, IA | Iowa | County | 103796 |
| Dallas County, TX | Texas | County | 2635516 |
| Dallas, TX | Texas | City | 1331000 |
| Dalton, GA | Georgia | City | 33128 |
| Damariscotta, ME | Maine | City | 1352 |
| Danbury, CT | Connecticut | City | 86759 |
| Dane County, WI | Wisconsin | County | 563951 |
| Dania Beach, FL | Florida | City | 31723 |
| Danville, IL | Illinois | City | 30969 |
| Daphne, AL | Alabama | City | 28777 |
| Darlington County, SC | South Carolina | County | 62755 |
| Dauphin County, PA | Pennsylvania | County | 277071 |
| Davenport, FL | Florida | City | 10953 |
| Davenport, IA | Iowa | City | 101009 |
| Davidson County, NC | North Carolina | County | 167000 |
| Davidson County, TN | Tennessee | County | 703953 |
| Davis, CA | California | City | 66799 |
| Dawson County, MT | Montana | County | 8904 |
| Dayton, OH | Ohio | City | 137644 |
| Dayton, TN | Tennessee | City | 7139 |
| Daytona Beach, FL | Florida | City | 74437 |
| De Pere, WI | Wisconsin | City | 25335 |
| De Soto, KS | Kansas | City | 6380 |
| Dearborn, MI | Michigan | City | 108420 |
| Decatur, AL | Alabama | City | 54344 |
| Decatur, IL | Illinois | City | 69646 |
| Decatur, TX | Texas | City | 6738 |
| Defiance County, OH | Ohio | County | 38144 |
| Defiance, OH | Ohio | City | 16741 |
| DeForest, WI | Wisconsin | City | 10884 |
| DeKalb County, GA | Georgia | County | 755287 |
| DeKalb County, MO | Missouri | County | 11872 |
| DeKalb, IL | Illinois | City | 42961 |
| Del Mar, CA | California | City | 3922 |
| DeLand, FL | Florida | City | 37351 |
| Delaware County, IN | Indiana | County | 114461 |
| Delaware County, OH | Ohio | County | 220740 |
| Delaware County, OK | Oklahoma | County | 41000 |
| Delaware County, PA | Pennsylvania | County | 573849 |
| Delhi, NY | New York | City | 2610 |
| Delmar, MD | Maryland | City | 3003 |
| Delray Beach, FL | Florida | City | 68217 |
| Denham Springs, LA | Louisiana | City | 9328 |
| Dennis Port, MA | Massachusetts | City | 13885 |
| Dennis, MA | Massachusetts | City | 13885 |
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