Delaware Gazetteer
| Name | County | Total Population | |
|---|---|---|---|
| 1. | City of Wilmington | New Castle | 72,931 |
| 2. | City of Dover | Kent | 40,282 |
| 3. | City of Newark | New Castle | 31,114 |
| 4. | Town of Middletown | New Castle | 25,276 |
| 5. | Bear Census Designated Place | New Castle | 22,945 |
| 6. | Glasgow Census Designated Place | New Castle | 15,644 |
| 7. | Brookside Census Designated Place | New Castle | 14,847 |
| 8. | Town of Smyrna | Kent | 14,259 |
| 9. | Hockessin Census Designated Place | New Castle | 13,480 |
| 10. | City of Milford | Sussex | 12,126 |
| 11. | Pike Creek Valley Census Designated Place | New Castle | 11,501 |
| 12. | Claymont Census Designated Place | New Castle | 9,716 |
| 13. | Town of Millsboro | Sussex | 8,778 |
| 14. | City of Seaford | Sussex | 8,512 |
| 15. | Wilmington Manor Census Designated Place | New Castle | 8,239 |
| 16. | North Star Census Designated Place | New Castle | 7,818 |
| 17. | Pike Creek Census Designated Place | New Castle | 7,683 |
| 18. | Town of Georgetown | Sussex | 7,310 |
| 19. | Edgemoor Census Designated Place | New Castle | 6,549 |
| 20. | Town of Elsmere | New Castle | 6,189 |
