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ZIP codes

ZIP codes in Sussex County, Delaware

Sussex County has 23 ZIP codes. 19 lie entirely inside it and 4 are shared with neighboring counties, so part of their land and their people are elsewhere. About 254,816 people live in the parts inside it (ACS 2020–2024).

By the All Map Tools Team

ZIP codes
23
1 more just touches the border (under 1% of their land)
Entirely inside
19
99% or more of their land
Shared with other counties
4
Most with Kent County (3)
Most populated ZIP
19966
35,884 people · Millsboro
Least populated ZIP
19931
375 people · Bethel
Largest ZIP by land
19947
119 sq mi · Georgetown

Map of the ZIP codes in Sussex County

Kent County Caroline County, MD Dorchester County, MD Wicomico County, MD Worcester County, MD 19930 · Bethany Beach · 3,014 people · 100% in the county 19931 · Bethel · 375 people · 100% in the county 19933 · Bridgeville · 10,597 people · 100% in the county 19939 · Dagsboro · 7,490 people · 100% in the county 19940 · Delmar · 7,540 people · 100% in the county 19941 · Ellendale · 3,435 people · 100% in the county 19944 · Fenwick Island · 636 people · 100% in the county 19945 · Millville · 9,640 people · 100% in the county 19947 · Georgetown · 20,760 people · 100% in the county 19950 · Greenwood · 7,918 people · 76% in the county 19951 · 2,245 people · 100% in the county 19952 · Harrington · 10,908 people · 1.6% in the county 19956 · Laurel · 16,327 people · 100% in the county 19958 · Lewes · 31,938 people · 100% in the county 19960 · Lincoln · 6,774 people · 100% in the county 19963 · Milford · 23,500 people · 50% in the county 19966 · Millsboro · 35,884 people · 100% in the county 19967 · Millville · 2,376 people · 100% in the county 19968 · Milton · 15,486 people · 100% in the county 19970 · Ocean View · 8,524 people · 100% in the county 19971 · Rehoboth Beach · 14,886 people · 100% in the county 19973 · Seaford · 26,834 people · 93% in the county 19975 · Selbyville · 10,862 people · 100% in the county 21874 · Willards · 1,693 people · 0.5% in the county
  • Entirely in the county (99% or more of its land)
  • Shared, mostly in this county
  • Shared, mostly in other counties
  • Neighboring counties
Open in the interactive tool

Each area is a ZIP code with its number where it fits. Hover over one to see its name.

All ZIP codes in Sussex County

23 ZIP codes in Sussex County, DE, by number
ZIP code Main city Population Land in the county Residents in the county
19930 Bethany Beach 3,014 100% 3,014
19931 Bethel 375 100% 375
19933 Bridgeville 10,597 100% 10,597
19939 Dagsboro 7,490 100% 7,490
19940 Delmar 7,540 100% 7,540
19941 Ellendale 3,435 100% 3,435
19944 Fenwick Island 636 100% 636
19945 Millville 9,640 100% 9,640
19947 Georgetown 20,760 100% 20,760
19950 Greenwood 7,918 76% ≈ 6,785
19951 — 2,245 100% 2,245
19952 Harrington 10,908 1.6% ≈ 164
19956 Laurel 16,327 100% 16,327
19958 Lewes 31,938 100% 31,938
19960 Lincoln 6,774 100% 6,774
19963 Milford 23,500 50% ≈ 12,475
19966 Millsboro 35,884 100% 35,884
19967 Millville 2,376 100% 2,376
19968 Milton 15,486 100% 15,486
19970 Ocean View 8,524 100% 8,524
19971 Rehoboth Beach 14,886 100% 14,886
19973 Seaford 26,834 93% ≈ 26,594
19975 Selbyville 10,862 100% 10,862

They also touch the county with under 1% of their land, so they aren’t counted: 21874.

ZIP codes shared with other counties

These 4 ZIP codes have part of their land in another county. The first figure is the share of their land in Sussex County; then, where the rest lies.

Cities and prefixes

By main city (the city, town or CDP each ZIP shares the most land with), the ones with the most are Millville (2), Bethany Beach (1), Bethel (1), Bridgeville (1), Dagsboro (1), and Delmar (1); 21 places in all.

All 23 start with the same three digits, 199: the prefix of the USPS sorting center that handles them.

Neighboring counties

Each one with its ZIP codes. Those without a page of their own open in the tool.

Tools for this county

ZIP codes by county or city The same ZIP codes on an interactive map, with the list as CSV or to copy County map with cities Its cities, towns and CDPs with their population ZIP codes in a radius The ZIP codes within 10 miles of its center, or any distance you like

Sources

  • U.S. Census Bureau, 2020 ZCTA to County, ZCTA to Place and ZCTA to Census Tract Relationship Files (and the 2022 County Subdivision to ZCTA file for Connecticut). Public domain.
  • U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, table B01003 (population of each ZIP code, census tract and Connecticut town). Public domain.
  • U.S. Census Bureau, Vintage 2025 Population Estimates (county population) and 2025 Gazetteer Files (land area and interior point of each ZIP code). Public domain.
  • U.S. Census Bureau, Cartographic Boundary Files: ZCTAs 2020 and counties 2025, 1:500,000; county adjacency file 2025. Public domain.

How we count. ZIP codes here are the Census Bureau’s ZIP Code Tabulation Areas (ZCTAs), the areas it draws to match USPS ZIP codes; ZIPs with no area of their own (PO boxes, single buildings) aren’t included. A ZIP can cross county lines: “Land in the county” is the exact share of its land inside, from the Census relationship files. “Residents in the county” is the whole ZIP for those entirely inside; for shared ones it’s an estimate, spreading the people of each census tract over the land it shares with the ZIP. Population: ACS 2020–2024. Methodology.

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