| 1 | Delmar town (south-southeast) | 7,067 |
| 2 | Lincoln CDP | 6,294 |
| 3 | Ellendale town (south-southeast) | 6,184 |
| 4 | Seaford city (east-northeast) | 6,148 |
| 5 | Bethel town (northwest) | 6,057 |
| 6 | Greenwood town (east) | 5,945 |
| 7 | Millsboro town (west) | 5,598 |
| 8 | Millville town (west-southwest) | 5,420 |
| 9 | Milford city (northeast) | 5,368 |
| 10 | Dagsboro town (west-southwest) | 5,345 |
| 11 | Slaughter Beach town (west-northwest) | 5,262 |
| 12 | Seaford city (southwest) | 5,196 |
| 13 | Seaford city (west-southwest) | 4,964 |
| 14 | Lewes city (south-southwest) | 4,681 |
| 15 | Bethel town (south) | 4,541 |
| 16 | Delmar town (north-northwest) | 4,528 |
| 17 | Milton town (east-southeast) | 4,507 |
| 18 | Milford city (southwest) | 4,485 |
| 19 | Rehoboth Beach city (west) | 4,460 |
| 20 | Bridgeville town (north) | 4,410 |
| 21 | Ellendale town (south-southwest) | 4,363 |
| 22 | Lewes city (south) | 4,347 |
| 23 | Ellendale town (north-northwest) | 4,279 |
| 24 | Blades town (east-northeast) | 4,233 |
| 25 | Milton town (west-northwest) | 4,142 |
| 26 | Lewes city (southwest) | 4,141 |
| 27 | Bethel town (east-northeast) | 4,062 |
| 28 | Dewey Beach town (north-northwest) | 4,005 |
| 29 | Lewes city (northwest) | 3,968 |
| 30 | Millville town (north-northwest) | 3,922 |
| 31 | Long Neck CDP (south-southwest) | 3,911 |
| 32 | Lewes city (east) | 3,861 |
| 33 | Ellendale town (east-northeast) | 3,812 |
| 34 | Selbyville town (west) | 3,763 |
| 35 | Millsboro town (east) | 3,551 |
| 36 | Bridgeville town (south) | 3,533 |
| 37 | Dagsboro town (south) | 3,446 |
| 38 | Lewes city (north-northwest) | 3,425 |
| 39 | Greenwood town (west) | 3,299 |
| 40 | Georgetown town (east-northeast) | 3,290 |
| 41 | Ocean View town (north-northwest) | 3,260 |
| 42 | Blades town (west-southwest) | 3,257 |
| 43 | Lewes city (east-southeast) | 3,181 |
| 44 | Ocean View town (south-southeast) | 2,961 |
| 45 | Frankford town | 2,865 |
| 46 | Millville town (east) | 2,863 |
| 47 | Lewes city (northeast 1) | 2,561 |
| 48 | Georgetown town (west-southwest) | 2,416 |
| 49 | Long Neck CDP (north-northwest) | 2,412 |
| 50 | Selbyville town (east) | 2,410 |
| 51 | Long Neck CDP (west-southwest) | 2,392 |
| 52 | Rehoboth Beach city (north-northwest) | 2,375 |
| 53 | Dewey Beach town (north) | 2,218 |
| 54 | Millville town (south-southeast) | 2,200 |
| 55 | Dewey Beach town (northwest) | 2,091 |
| 56 | Dewey Beach town (west) | 2,045 |
| 57 | Lewes city (north-northeast) | 1,978 |
| 58 | Dewey Beach town (southwest) | 1,917 |
| 59 | Dagsboro town (north-northeast) | 1,862 |
| 60 | Long Neck CDP (northwest) | 1,737 |
| 61 | Fenwick Island town (southwest) | 1,659 |
| 62 | Long Neck CDP (east-southeast) | 1,618 |
| 63 | Lewes city (west-northwest) | 1,587 |
| 64 | Dewey Beach town (south-southeast) | 1,376 |
| 65 | Fenwick Island town (north-northeast) | 1,347 |
| 66 | Long Neck CDP (east-northeast) | 1,138 |
| 67 | Dewey Beach town (north-northeast) | 1,088 |
| 68 | Dewey Beach town (east-southeast) | 1,080 |
| 69 | Bethany Beach town (north) | 1,042 |
| 70 | Rehoboth Beach city (east-southeast) | 929 |
| 71 | Fenwick Island town (northeast) | 746 |
| 72 | South Bethany town | 696 |
| 73 | Bethany Beach town (south) | 679 |