Loading ZIP outlines…
Circle is measured from where you first press; Lasso follows your outline. The switch under Add and Remove decides which ZIPs count: Touching (any ZIP the shape touches), Center in (the ZIP's center point is inside) or Fully in (the whole ZIP is inside). For an exact distance, type a ZIP above and press Radius.
To leave out PO Box or single-organization ZIPs (a company, university or government office), or to keep only those, uncheck the others under Include ZIP types in the list panel.
The dotted grip on each box moves it: click or tap the grip to fold the box away, drag it to put the box somewhere else.
About ZipZoomer: what it does, the data it uses, and answers to common questions.
Delaware has 96 ZIP codes, and 990,270 people lived in them at the 2020 Census. That is 0.2% of the 41,063 ZIP codes in the 50 states, the District of Columbia and Puerto Rico, the 51st most of the 52; by population it ranks 46th.
↑ See the 96 ZIP codes on the map
Of Delaware’s ZIPs, 60 are standard ZIP codes for street delivery, while 19 serve PO Boxes only and 17 belong to a single organization such as a university, a hospital, a large company or a government office. On the map 68 ZIPs have outlines; the other 28 are drawn as dots, because they cover no area of their own, and they have no residents counted in the Census.
The ZIPs are spread over 3 counties and 57 postal city names. New Castle County has the most, 52 (54% of the state’s), followed by Kent County with 22 and Sussex County with 22.
The postal city with the most ZIP codes is Wilmington, with 25; it is also the most populous, with 219,956 people across its ZIPs. 6 of its postal cities are among the 2,000 most populous in the country, from Wilmington down to Bear.
The most populous is 19720 in New Castle, with 61,043 residents, followed by 19702 in Newark with 55,653. Half of the 68 ZIPs with residents have more than 10,107 people and half fewer. 2 ZIPs have 50,000 residents or more, while 15 have fewer than 1,000.
| ZIP | City | Type | People |
|---|---|---|---|
| 19720 | New Castle | Standard | 61,043 |
| 19702 | Newark | Standard | 55,653 |
| 19709 | Middletown | Standard | 49,599 |
| 19711 | Newark | Standard | 48,477 |
| 19701 | Bear | Standard | 42,717 |
| 19805 | Wilmington | Standard | 39,985 |
| 19808 | Wilmington | Standard | 39,285 |
| 19904 | Dover | Standard | 36,880 |
| 19901 | Dover | Standard | 36,839 |
| 19966 | Millsboro | Standard | 32,520 |
| ZIP | City | Type | People |
|---|---|---|---|
| 19713 | Newark | Standard | 31,867 |
| 19958 | Lewes | Standard | 27,911 |
| 19977 | Smyrna | Standard | 27,505 |
| 19802 | Wilmington | Standard | 26,189 |
| 19973 | Seaford | Standard | 25,550 |
| 19810 | Wilmington | Standard | 25,270 |
| 19803 | Wilmington | Standard | 21,886 |
| 19947 | Georgetown | Standard | 20,964 |
| 19963 | Milford | Standard | 20,827 |
| 19804 | Wilmington | Standard | 18,292 |
| 19707 | Hockessin | Standard | 17,274 |
| 19956 | Laurel | Standard | 16,327 |
| 19801 | Wilmington | Standard | 16,219 |
| 19703 | Claymont | Standard | 16,175 |
| 19809 | Wilmington | Standard | 14,658 |
| 19971 | Rehoboth Beach | Standard | 14,348 |
| 19934 | Camden Wyoming | Standard | 14,243 |
| 19734 | Townsend | Standard | 14,116 |
| 19968 | Milton | Standard | 13,800 |
| 19962 | Magnolia | Standard | 13,692 |
| 19943 | Felton | Standard | 12,523 |
| 19952 | Harrington | Standard | 10,621 |
| 19975 | Selbyville | Standard | 10,476 |
| 19938 | Clayton | Standard | 10,131 |
| 19806 | Wilmington | Standard | 10,083 |
| 19933 | Bridgeville | Standard | 9,784 |
| 19970 | Ocean View | Standard | 8,591 |
| 19807 | Wilmington | Standard | 8,089 |
| 19945 | Frankford | Standard | 8,041 |
| 19939 | Dagsboro | Standard | 7,357 |
| 19960 | Lincoln | Standard | 7,121 |
| 19950 | Greenwood | Standard | 7,095 |
| 19940 | Delmar | Standard | 6,541 |
| 19717 | Newark | Standard | 6,201 |
| 19946 | Frederica | Standard | 4,932 |
| 19953 | Hartly | Standard | 4,500 |
| 19941 | Ellendale | Standard | 2,857 |
| 19930 | Bethany Beach | Standard | 2,657 |
| 19951 | Harbeson | Standard | 1,986 |
| 19706 | Delaware City | PO Box | 1,938 |
| 19967 | Millville | Standard | 1,802 |
| 19954 | Houston | Standard | 1,629 |
| 19964 | Marydel | Standard | 1,298 |
| 19979 | Viola | Standard | 722 |
| 19944 | Fenwick Island | Standard | 519 |
| 19730 | Odessa | PO Box | 472 |
| 19731 | Port Penn | PO Box | 329 |
| 19936 | Cheswold | PO Box | 329 |
| 19733 | Saint Georges | PO Box | 320 |
| 19931 | Bethel | Standard | 258 |
| 19980 | Woodside | PO Box | 235 |
| 19732 | Rockland | PO Box | 223 |
| 19955 | Kenton | PO Box | 191 |
| 19710 | Montchanin | PO Box | 108 |
| 19902 | Dover Afb | Standard | 108 |
| 19716 | Newark | Standard | 42 |
| 19736 | Yorklyn | Standard | 34 |
| 19735 | Winterthur | Standard | 16 |
| 19708 | Kirkwood | PO Box | – |
| 19712 | Newark | Single org. | – |
| 19714 | Newark | PO Box | – |
| 19715 | Newark | PO Box | – |
| 19718 | Newark | Single org. | – |
| 19721 | New Castle | Single org. | – |
| 19725 | Newark | Single org. | – |
| 19726 | New Castle | Single org. | – |
| 19850 | Wilmington | PO Box | – |
| 19880 | Wilmington | PO Box | – |
| 19884 | Wilmington | Single org. | – |
| 19885 | Wilmington | Single org. | – |
| 19886 | Wilmington | Single org. | – |
| 19890 | Wilmington | Single org. | – |
| 19891 | Wilmington | Single org. | – |
| 19892 | Wilmington | Single org. | – |
| 19893 | Wilmington | Single org. | – |
| 19894 | Wilmington | Single org. | – |
| 19895 | Wilmington | Single org. | – |
| 19896 | Wilmington | Single org. | – |
| 19897 | Wilmington | Single org. | – |
| 19898 | Wilmington | Single org. | – |
| 19899 | Wilmington | PO Box | – |
| 19903 | Dover | PO Box | – |
| 19905 | Dover | PO Box | – |
| 19906 | Dover | Standard | – |
| 19961 | Little Creek | PO Box | – |
| 19969 | Nassau | PO Box | – |
Largest first by 2020 population; “–” marks ZIPs with no residents of their own.
ZIP codes in each:
Population is the 2020 Census count for each ZIP Code Tabulation Area, the Census Bureau’s outline of the area a ZIP code delivers to. ZIP codes for PO Boxes and single organizations have no area of their own, so they count as zero. City names are postal city names (the name the Postal Service prefers on mail), not city limits, so a suburb with its own post office is counted as its own city.
Each ZIP is counted in the one county that holds most of its outline; ZIP codes do not follow county lines, so a few reach partly into a neighbor.
The map above opens with all 96 selected and framed. Click or tap a ZIP to drop it or add a neighbor, draw a circle or lasso to add more, then press Copy list or Download in the list panel to take the ZIP codes of Delaware into a spreadsheet, an ad platform or a mailing tool.
Page updated · Data updated