| ZIP Code | ZIP Code Place Name | County | ZIP Code Type |
|---|---|---|---|
| 19901 | Dover | Kent County | Standard |
| 19902 | Dover AFB | Kent County | Standard |
| 19903 | Dover | Kent County | PO Box |
| 19904 | Dover | Kent County | Standard |
| 19905 | Dover | Kent County | PO Box |
| 19906 | Dover | Kent County | Standard |
| 19934 | Camden Wyoming | Kent County | Standard |
| 19936 | Cheswold | Kent County | PO Box |
| 19938 | Clayton | Kent County | Standard |
| 19943 | Felton | Kent County | Standard |
| 19946 | Frederica | Kent County | Standard |
| 19950 | Greenwood | Sussex County | Standard |
| 19952 | Harrington | Kent County | Standard |
| 19953 | Hartly | Kent County | Standard |
| 19954 | Houston | Kent County | Standard |
| 19955 | Kenton | Kent County | PO Box |
| 19961 | Little Creek | Kent County | PO Box |
| 19962 | Magnolia | Kent County | Standard |
| 19963 | Milford | Sussex County | Standard |
| 19964 | Marydel | Kent County | Standard |
| 19977 | Smyrna | Kent County | Standard |
| 19979 | Viola | Kent County | Standard |
| 19980 | Woodside | Kent County | PO Box |