ZIP codes in Delaware
96 ZIP codes. Population from the Census ACS 2020–2024 5-year estimates (PO-box-only ZIPs have none).
| ZIP | City | Population |
|---|---|---|
| 19701 | Bear | 42,984 |
| 19702 | Newark | 55,683 |
| 19703 | Claymont | 15,460 |
| 19706 | Delaware City | 2,038 |
| 19707 | Hockessin | 17,376 |
| 19708 | Kirkwood | — |
| 19709 | Middletown | 53,234 |
| 19710 | Montchanin | 0 |
| 19711 | Newark | 49,432 |
| 19712 | Newark | — |
| 19713 | Newark | 30,747 |
| 19714 | Newark | — |
| 19715 | Newark | — |
| 19716 | Newark | 0 |
| 19717 | Newark | 6,036 |
| 19718 | Newark | — |
| 19720 | New Castle | 62,392 |
| 19721 | New Castle | — |
| 19725 | Newark | — |
| 19726 | New Castle | — |
| 19730 | Odessa | 425 |
| 19731 | Port Penn | 655 |
| 19732 | Rockland | 89 |
| 19733 | Saint Georges | 186 |
| 19734 | Townsend | 14,214 |
| 19735 | Winterthur | 0 |
| 19736 | Yorklyn | 127 |
| 19801 | Wilmington | 16,327 |
| 19802 | Wilmington | 26,051 |
| 19803 | Wilmington | 22,279 |
| 19804 | Wilmington | 18,779 |
| 19805 | Wilmington | 41,402 |
| 19806 | Wilmington | 9,777 |
| 19807 | Wilmington | 7,815 |
| 19808 | Wilmington | 39,082 |
| 19809 | Wilmington | 14,311 |
| 19810 | Wilmington | 26,530 |
| 19850 | Wilmington | — |
| 19880 | Wilmington | — |
| 19884 | Wilmington | — |
| 19885 | Wilmington | — |
| 19886 | Wilmington | — |
| 19890 | Wilmington | — |
| 19891 | Wilmington | — |
| 19892 | Wilmington | — |
| 19893 | Wilmington | — |
| 19894 | Wilmington | — |
| 19895 | Wilmington | — |
| 19896 | Wilmington | — |
| 19897 | Wilmington | — |
| 19898 | Wilmington | — |
| 19899 | Wilmington | — |
| 19901 | Dover | 37,763 |
| 19902 | Dover Afb | 44 |
| 19903 | Dover | — |
| 19904 | Dover | 38,818 |
| 19905 | Dover | — |
| 19906 | Dover | — |
| 19930 | Bethany Beach | 3,014 |
| 19931 | Bethel | 375 |
| 19933 | Bridgeville | 10,597 |
| 19934 | Camden Wyoming | 14,061 |
| 19936 | Cheswold | 152 |
| 19938 | Clayton | 9,561 |
| 19939 | Dagsboro | 7,490 |
| 19940 | Delmar | 7,540 |
| 19941 | Ellendale | 3,435 |
| 19943 | Felton | 13,410 |
| 19944 | Fenwick Island | 636 |
| 19945 | Frankford | 9,640 |
| 19946 | Frederica | 5,603 |
| 19947 | Georgetown | 20,760 |
| 19950 | Greenwood | 7,918 |
| 19951 | Harbeson | 2,245 |
| 19952 | Harrington | 10,908 |
| 19953 | Hartly | 5,255 |
| 19954 | Houston | 1,427 |
| 19955 | Kenton | 352 |
| 19956 | Laurel | 16,327 |
| 19958 | Lewes | 31,938 |
| 19960 | Lincoln | 6,774 |
| 19961 | Little Creek | — |
| 19962 | Magnolia | 13,770 |
| 19963 | Milford | 23,500 |
| 19964 | Marydel | 1,418 |
| 19966 | Millsboro | 35,884 |
| 19967 | Millville | 2,376 |
| 19968 | Milton | 15,486 |
| 19969 | Nassau | — |
| 19970 | Ocean View | 8,524 |
| 19971 | Rehoboth Beach | 14,886 |
| 19973 | Seaford | 26,834 |
| 19975 | Selbyville | 10,862 |
| 19977 | Smyrna | 27,704 |
| 19979 | Viola | 619 |
| 19980 | Woodside | 268 |
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