Delaware ZIP Codes

68 ZIP Codes

Zip Code
City
County
Population ↓
19720New CastleNew Castle County62,392
19702NewarkNew Castle County55,683
19709MiddletownNew Castle County53,234
19711NewarkNew Castle County49,432
19701BearNew Castle County42,984
19805WilmingtonNew Castle County41,402
19808WilmingtonNew Castle County39,082
19904DoverKent County38,818
19901DoverKent County37,763
19966MillsboroSussex County35,884
19958LewesSussex County31,938
19713NewarkNew Castle County30,747
19977SmyrnaKent County27,704
19973SeafordSussex County26,834
19810WilmingtonNew Castle County26,530
19802WilmingtonNew Castle County26,051
19963MilfordSussex County23,500
19803WilmingtonNew Castle County22,279
19947GeorgetownSussex County20,760
19804WilmingtonNew Castle County18,779
19707HockessinNew Castle County17,376
19801WilmingtonNew Castle County16,327
19956LaurelSussex County16,327
19968MiltonSussex County15,486
19703ClaymontNew Castle County15,460
19971Rehoboth BeachSussex County14,886
19809WilmingtonNew Castle County14,311
19734TownsendNew Castle County14,214
19934Camden WyomingKent County14,061
19962MagnoliaKent County13,770
19943FeltonKent County13,410
19952HarringtonKent County10,908
19975SelbyvilleSussex County10,862
19933BridgevilleSussex County10,597
19806WilmingtonNew Castle County9,777
19945FrankfordSussex County9,640
19938ClaytonKent County9,561
19970Ocean ViewSussex County8,524
19950GreenwoodSussex County7,918
19807WilmingtonNew Castle County7,815
19940DelmarSussex County7,540
19939DagsboroSussex County7,490
19960LincolnSussex County6,774
19717NewarkNew Castle County6,036
19946FredericaKent County5,603
19953HartlyKent County5,255
19941EllendaleSussex County3,435
19930Bethany BeachSussex County3,014
19967MillvilleSussex County2,376
19951HarbesonSussex County2,245
19706Delaware CityNew Castle County2,038
19954HoustonKent County1,427
19964MarydelKent County1,418
19731Port PennNew Castle County655
19944Fenwick IslandSussex County636
19979ViolaKent County619
19730OdessaNew Castle County425
19931BethelSussex County375
19955KentonKent County352
19980WoodsideKent County268
19733Saint GeorgesNew Castle County186
19936CheswoldKent County152
19736YorklynNew Castle County127
19732RocklandNew Castle County89
19902Dover AfbKent County44
19735WinterthurNew Castle County0
19716NewarkNew Castle County0
19710MontchaninNew Castle County0

Overview of ZIP Codes in Delaware

ZCTAs are geographic areas created by the US Census Bureau to approximate the delivery areas of ZIP Codes for statistical analysis. While ZCTAs use the same five-digit codes as ZIP Codes, they represent defined geographic areas that may not exactly match the mail delivery routes of ZIP Codes.
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Delaware Zip Prefix

ZIP Codes and ZCTAs (ZIP Code Tabulation Areas) serve different purposes. ZIP Codes are postal codes created by the USPS for mail delivery, and are not correlated to geographical coordinates. ZCTAs provide a way to analyze census data in relation to ZIP Code areas while maintaining geographic consistency and protecting privacy. In addition, there are more ZIP Codes than ZCTAs, because many ZIP Codes for PO Boxes or unique entities don't have corresponding ZCTAs (US Census).

The data shown reflect ZCTAs from the US Census. As of 2025, there are 68 ZCTAs in Delaware (US Census).

Sources

  1. US Census 2024 ACS 5-Year Survey (Table S0101 - Age and Sex)
  2. US Census: 2025 Gazetteer Files
  3. US Census: ZIP Code Tabulation Areas (ZCTAs)

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