All counties in the State of Delaware.
| Name | Status | Population census 1990-04-01 | Population census 2000-04-01 | Population census 2010-04-01 | |
|---|---|---|---|---|---|
| Kent | County | 110,993 | 126,771 | 162,310 | o |
| New Castle | County | 441,946 | 500,294 | 538,479 | o |
| Sussex | County | 113,229 | 156,494 | 197,145 | o |
| Delaware | Federal State | 666,168 | 783,559 | 897,934 |
All places in the State of Delaware.
| Name | Status | County | Population census 1990-04-01 | Population census 2000-04-01 | Population census 2010-04-01 | |
|---|---|---|---|---|---|---|
| Arden | Village | New Castle | 479 | 475 | 439 | o |
| Ardencroft | Village | New Castle | 280 | 267 | 231 | o |
| Ardentown | Village | New Castle | 325 | 300 | 264 | o |
| Bear | Census-Designated Place | New Castle | ... | 17,593 | 19,371 | o |
| Bellefonte | Town | New Castle | 1,271 | 1,249 | 1,193 | o |
| Bethany Beach | Town | Sussex | 313 | 903 | 1,060 | o |
| Bethel | Town | Sussex | 156 | 184 | 171 | o |
| Blades | Town | Sussex | ... | 1,097 | 1,241 | o |
| Bowers | Town | Kent | 184 | 305 | 335 | o |
| Bridgeville | Town | Sussex | ... | 1,543 | 2,048 | o |
| Brookside | Census-Designated Place | New Castle | 15,307 | 14,806 | 14,353 | o |
| Camden | Town | Kent | 1,911 | 2,091 | 3,464 | o |
| Cheswold | Town | Kent | ... | 453 | 1,380 | o |
| Claymont | Census-Designated Place | New Castle | 9,800 | 9,220 | 8,253 | o |
| Clayton | Town | 1,069 | 1,307 | 2,918 | o | |
| Dagsboro | Town | Sussex | 485 | 519 | 805 | o |
| Delaware City | City | New Castle | 1,677 | 1,456 | 1,695 | o |
| Delmar | Town | Sussex | 1,285 | 1,439 | 1,597 | o |
| Dewey Beach | Town | Sussex | 207 | 299 | 341 | o |
| Dover | City | Kent | 28,775 | 32,201 | 36,047 | o |
| Dover Base Housing | Census-Designated Place | Kent | ... | 3,394 | 3,450 | o |
| Edgemoor | Census-Designated Place | New Castle | 5,853 | 5,992 | 5,677 | o |
| Ellendale | Town | Sussex | 332 | 335 | 381 | o |
| Elsmere | Town | New Castle | 5,845 | 5,800 | 6,131 | o |
| Farmington | Town | Kent | 116 | 75 | 110 | o |
| Felton | Town | Kent | 673 | 807 | 1,298 | o |
| Fenwick Island | Town | Sussex | 177 | 342 | 379 | o |
| Frankford | Town | Sussex | 533 | 714 | 847 | o |
| Frederica | Town | Kent | 766 | 667 | 774 | o |
| Georgetown | Town | Sussex | 3,964 | 4,779 | 6,422 | o |
| Glasgow | Census-Designated Place | New Castle | ... | 12,840 | 14,303 | o |
| Greenville | Census-Designated Place | New Castle | ... | 2,332 | 2,326 | o |
| Greenwood | Town | Sussex | 584 | 842 | 973 | o |
| Harrington | City | Kent | 2,428 | 3,191 | 3,562 | o |
| Hartly | Town | Kent | 77 | 78 | 74 | o |
| Henlopen Acres | Town | Sussex | ... | 133 | 122 | o |
| Highland Acres | Census-Designated Place | Kent | 3,151 | 3,379 | 3,459 | o |
| Hockessin | Census-Designated Place | New Castle | ... | 12,902 | 13,527 | o |
| Houston | Town | Kent | 476 | 430 | 374 | o |
| Kent Acres | Census-Designated Place | Kent | 1,807 | 1,637 | 1,890 | o |
| Kenton | Town | Kent | 435 | 237 | 261 | o |
| Laurel | Town | Sussex | 3,412 | 3,739 | 3,708 | o |
| Leipsic | Town | Kent | 220 | 203 | 183 | o |
| Lewes | City | Sussex | 2,331 | 2,918 | 2,747 | o |
| Little Creek | Town | Kent | 138 | 195 | 224 | o |
| Long Neck | Census-Designated Place | Sussex | ... | 1,629 | 1,980 | o |
| Magnolia | Town | Kent | 286 | 226 | 225 | o |
| Middletown | Town | New Castle | 3,738 | 6,262 | 18,871 | o |
| Milford | City | ... | 7,001 | 9,559 | o | |
| Millsboro | Town | Sussex | ... | 2,491 | 3,877 | o |
| Millville | Town | Sussex | 188 | 254 | 544 | o |
| Milton | Town | Sussex | ... | 1,716 | 2,576 | o |
| New Castle | City | New Castle | 4,893 | 4,978 | 5,285 | o |
| Newark | City | New Castle | 26,870 | 29,174 | 31,454 | o |
| Newport | Town | New Castle | 1,149 | 1,143 | 1,055 | o |
| North Star | Census-Designated Place | New Castle | ... | 8,277 | 7,980 | o |
| Ocean View | Town | Sussex | ... | 1,041 | 1,882 | o |
| Odessa | Town | New Castle | 282 | 286 | 364 | o |
| Pike Creek | Census-Designated Place | New Castle | ... | ... | 7,898 | o |
| Pike Creek Valley | Census-Designated Place | New Castle | ... | ... | 11,217 | o |
| Rehoboth Beach | City | Sussex | 1,327 | 1,497 | 1,327 | o |
| Rising Sun-Lebanon | Census-Designated Place | Kent | 2,177 | 2,458 | 3,391 | o |
| Riverview | Census-Designated Place | Kent | 1,138 | 1,583 | 2,456 | o |
| Rodney Village | Census-Designated Place | Kent | 1,745 | 1,602 | 1,487 | o |
| Seaford | City | Sussex | 5,673 | 6,774 | 6,928 | o |
| Selbyville | Town | Sussex | ... | 1,718 | 2,167 | o |
| Slaughter Beach | Town | Sussex | 99 | 197 | 207 | o |
| Smyrna | Town | 5,413 | 5,843 | 10,023 | o | |
| South Bethany | Town | Sussex | 145 | 492 | 449 | o |
| Townsend | Town | New Castle | 416 | 340 | 2,049 | o |
| Viola | Town | Kent | 175 | 156 | 157 | o |
| Wilmington | City | New Castle | 71,526 | 72,644 | 70,851 | o |
| Wilmington Manor | Census-Designated Place | New Castle | 8,568 | 8,262 | 7,889 | o |
| Woodside | Town | Kent | 144 | 184 | 181 | o |
| Woodside East | Census-Designated Place | Kent | 1,655 | 2,174 | 2,316 | o |
| Wyoming | Town | Kent | 1,533 | 1,174 | 1,313 | o |
Source: US Census Bureau (web).
2011-04-03WWW.CITYPOPULATION.DE