Delaware Gazetteer
| Name | County | Total Population | |
|---|---|---|---|
| 1. | City of Wilmington | New Castle | 71,758 |
| 2. | City of Dover | Kent | 39,955 |
| 3. | City of Newark | New Castle | 30,568 |
| 4. | Town of Middletown | New Castle | 25,051 |
| 5. | Bear Census Designated Place | New Castle | 23,078 |
| 6. | Glasgow Census Designated Place | New Castle | 15,464 |
| 7. | Brookside Census Designated Place | New Castle | 14,965 |
| 8. | Town of Smyrna | Kent | 13,962 |
| 9. | Hockessin Census Designated Place | New Castle | 13,547 |
| 10. | City of Milford | Sussex | 11,752 |
| 11. | Pike Creek Valley Census Designated Place | New Castle | 11,594 |
| 12. | Claymont Census Designated Place | New Castle | 9,766 |
| 13. | Wilmington Manor Census Designated Place | New Castle | 8,349 |
| 14. | Town of Millsboro | Sussex | 8,253 |
| 15. | City of Seaford | Sussex | 8,161 |
| 16. | North Star Census Designated Place | New Castle | 7,900 |
| 17. | Pike Creek Census Designated Place | New Castle | 7,757 |
| 18. | Town of Georgetown | Sussex | 7,238 |
| 19. | Edgemoor Census Designated Place | New Castle | 6,655 |
| 20. | Town of Elsmere | New Castle | 6,202 |
