There are 22 zip codes in Sussex County, Delaware. The most populated is 19966, located in Millsboro. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
19966Millsboro32,513
19958Lewes28,761
19973Seaford26,070
19963Milford21,394
19947Georgetown19,513
19956Laurel15,822
19968Milton15,125
19971Rehoboth Beach15,043
19933Bridgeville10,610
19975Selbyville9,693
19945Frankford8,519
19939Dagsboro7,668
19970Ocean View7,639
19950Greenwood7,524
19960Lincoln6,863
19940Delmar6,818
19941Ellendale3,109
19930Bethany Beach2,878
19951Harbeson2,173
19967Millville2,050
19944Fenwick Island582
19931Bethel376

Sussex County, Delaware Zip Codes by Population (2024)