| Arden | 430 | New Castle County |
| Ardencroft | 259 | New Castle County |
| Ardentown | 286 | New Castle County |
| Bear | 14,806 | New Castle County |
| Bellefonte | 1,141 | New Castle County |
| Bethany Beach | 837 | Sussex County |
| Bethel | 184 | Sussex County |
| Blades | 903 | Sussex County |
| Bowers | 301 | Kent County |
| Bridgeville | 1,407 | Sussex County |
| Brookside | 12,902 | New Castle County |
| Camden | 1,657 | Kent County |
| Cheswold | 305 | Kent County |
| Claymont | 8,277 | New Castle County |
| Clayton | 1,249 | Kent County, New Castle County |
| Dagsboro | 492 | Sussex County |
| Delaware City | 1,436 | New Castle County |
| Delmar | 1,273 | Sussex County |
| Dewey Beach | 300 | Sussex County |
| Dover | 28,547 | Kent County |
| Dover Base Housing | 3,379 | Kent County |
| Edgemoor | 5,800 | New Castle County |
| Ellendale | 313 | Sussex County |
| Elsmere | 5,679 | New Castle County |
| Farmington | 735,617 | Kent County |
| Felton | 714 | Kent County |
| Fenwick Island | 327 | Sussex County |
| Frankford | 648 | Sussex County |
| Frederica | 519 | Kent County |
| Georgetown | 3,668 | Sussex County |
| Glasgow | 9,220 | New Castle County |
| Greenville | 2,174 | New Castle County |
| Greenwood | 784 | Sussex County |
| Harrington | 2,932 | Kent County |
| Hartly | 75 | Kent County |
| Henlopen Acres | 78 | Sussex County |
| Highland Acres | 3,174 | Kent County |
| Hockessin | 12,840 | New Castle County |
| Houston | 346 | Kent County |
| Kent Acres | 1,629 | Kent County |
| Kenton | 226 | Kent County |
| Laurel | 3,394 | Sussex County |
| Leipsic | 198 | Kent County |
| Lewes | 2,458 | Sussex County |
| Little Creek | 184 | Kent County |
| Long Neck | 1,602 | Sussex County |
| Magnolia | 203 | Kent County |
| Middletown | 5,992 | New Castle County |
| Milford | 6,699 | Kent County, Sussex County |
| Millsboro | 2,332 | Sussex County |
| Millville | 237 | Sussex County |
| Milton | 1,645 | Sussex County |
| New Castle | 4,643 | New Castle County |
| Newark | 19,751 | New Castle County |
| Newport | 1,006 | New Castle County |
| North Star | 8,262 | New Castle County |
| Ocean View | 956 | Sussex County |
| Odessa | 267 | New Castle County |
| Pike Creek | 17,593 | New Castle County |
| Rehoboth Beach | 1,453 | Sussex County |
| Rising Sun-Lebanon | 2,360 | Kent County |
| Riverview | 1,495 | Kent County |
| Rodney Village | 1,583 | Kent County |
| Seaford | 6,161 | Sussex County |
| Selbyville | 1,637 | Sussex County |
| Slaughter Beach | 195 | Sussex County |
| Smyrna | 4,862 | Kent County, New Castle County |
| South Bethany | 474 | Sussex County |
| Townsend | 342 | New Castle County |
| Viola | 139 | Kent County |
| Wilmington | 32,135 | New Castle County |
| Wilmington Manor | 6,732 | New Castle County |
| Woodside | 156 | Kent County |
| Woodside East | 2,100 | Kent County |
| Wyoming | 1,122 | Kent County |