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
Population
City
1996632,513Millsboro
1995828,761Lewes
1997326,070Seaford
1996321,394Milford
1994719,513Georgetown
1995615,822Laurel
1996815,125Milton
1997115,043Rehoboth Beach
1993310,610Bridgeville
199759,693Selbyville
199458,519Frankford
199397,668Dagsboro
199707,639Ocean View
199507,524Greenwood
199606,863Lincoln
199406,818Delmar
199413,109Ellendale
199302,878Bethany Beach
199512,173Harbeson
199672,050Millville
19944582Fenwick Island
19931376Bethel
showing: 22 rows

Zip Codes in Sussex County, Delaware by Population (2024)