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County · GEOID 10003

New Castle County, DE ZIP codes

32 ZIP/ZCTAs intersecting this county.

ACS 2023 population

573,030

Median household income

$89,901

Median home value

$329,800

U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: County New Castle County (GEOID 10003). Methodology

Combined population of ZIP/ZCTAs intersecting this county: 607,004 (32 ZIPs).

Combined population of ZIP/ZCTAs intersecting this county. Each intersecting ZIP contributes its full ZCTA population; overlap percents are descriptive only. This is not the Census county ACS headline above. Methodology

ZIP/ZCTA overlap with New Castle County

Population overlap

Share of each ZIP/ZCTA’s population located within New Castle County, based on ZIP Code Database county-overlap data. This is a population measure, not land-area overlap or the Census county population.

  • 19701100.0%

    Directory county

  • 19702100.0%

    Directory county

  • 19703100.0%

    Directory county

  • 19706100.0%

    Directory county

  • 19707100.0%

    Directory county

  • 19709100.0%

    Directory county

  • 19710100.0%

    Directory county

  • 19711100.0%

    Directory county

  • 19713100.0%

    Directory county

  • 19716100.0%

    Directory county

  • 19717100.0%

    Directory county

  • 19720100.0%

    Directory county

  • 19730100.0%

    Directory county

  • 19731100.0%

    Directory county

  • 19732100.0%

    Directory county

  • 19733100.0%

    Directory county

  • 19734100.0%

    Directory county

  • 19735100.0%

    Directory county

  • 19736100.0%

    Directory county

  • 19801100.0%

    Directory county

  • 19802100.0%

    Directory county

  • 19803100.0%

    Directory county

  • 19804100.0%

    Directory county

  • 19805100.0%

    Directory county

  • 19806100.0%

    Directory county

  • 19807100.0%

    Directory county

  • 19808100.0%

    Directory county

  • 19809100.0%

    Directory county

  • 19810100.0%

    Directory county

  • 199386.5%
  • 1997712.6%
  • 219121.4%

ZIP Code Database county-overlap table, field percent_of_zip_population_in_county, keyed by county_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology

ZIP codes intersecting New Castle County

ZIPCityCountyPopulationIncome
19701BearNew Castle County44,801$107,856
19702NewarkNew Castle County56,049$92,304
19703ClaymontNew Castle County15,936$76,328
19706Delaware CityNew Castle County2,059$77,143
19707HockessinNew Castle County17,366$172,161
19709MiddletownNew Castle County50,542$129,971
19710MontchaninNew Castle County0—
19711NewarkNew Castle County49,113$94,455
19713NewarkNew Castle County30,549$72,850
19716NewarkNew Castle County0—
19717NewarkNew Castle County6,522—
19720New CastleNew Castle County60,593$75,985
19730OdessaNew Castle County506$81,927
19731Port PennNew Castle County630$68,832
19732RocklandNew Castle County155$250,000+
19733Saint GeorgesNew Castle County182—
19734TownsendNew Castle County14,151$131,745
19735WinterthurNew Castle County0—
19736YorklynNew Castle County13—
19801WilmingtonNew Castle County16,170$44,505
19802WilmingtonNew Castle County25,670$54,370
19803WilmingtonNew Castle County21,971$133,941
19804WilmingtonNew Castle County18,231$76,204
19805WilmingtonNew Castle County40,315$56,708
19806WilmingtonNew Castle County9,934$86,240
19807WilmingtonNew Castle County7,763$156,905
19808WilmingtonNew Castle County38,334$92,883
19809WilmingtonNew Castle County15,129$85,988
19810WilmingtonNew Castle County25,859$110,486
19938ClaytonKent County9,867$96,338
19977SmyrnaKent County27,164$78,803
21912WarwickCecil County1,430$65,074

USPS associates these ZIPs with New Castle County

These codes list New Castle County as a primary or acceptable city. They are not used for the ACS headline.

ZIPCityCountyPopulationIncome
19708KirkwoodNew Castle County106—
19712NewarkNew Castle County15—
19714NewarkNew Castle County1,260—
19715NewarkNew Castle County138—
19718NewarkNew Castle County——
19721New CastleNew Castle County88—
19725NewarkNew Castle County——
19726New CastleNew Castle County——
19850WilmingtonNew Castle County518—
19880WilmingtonNew Castle County——
19884WilmingtonNew Castle County——
19885WilmingtonNew Castle County——
19886WilmingtonNew Castle County——
19887WilmingtonNew Castle County——
19889WilmingtonNew Castle County——
19890WilmingtonNew Castle County242—
19891WilmingtonNew Castle County——
19892WilmingtonNew Castle County——
19893WilmingtonNew Castle County——
19894WilmingtonNew Castle County——
19895WilmingtonNew Castle County——
19896WilmingtonNew Castle County——
19897WilmingtonNew Castle County——
19898WilmingtonNew Castle County658—
19899WilmingtonNew Castle County803—