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New Castle County, DE Demographics & ZIP Codes

New Castle County, Delaware demographics and median household income by ZIP code — 29 ZIP codes — population 568,543 — avg. income $101,295 — avg. home value $359,771. Compare income, housing, and ZIP-level data on US5.

ZIP codes
29
Population
568,543
Median household income (avg.)
$101,295
135% of U.S. median
Average home value
$359,771
103% of U.S. median
Average rent
$1,267
109% of U.S. median
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New Castle County demographics

New Castle County, Delaware covers 29 ZIP codes, with a combined ZIP-area population of about 568,543.

Median household income in New Castle County

The average median household income across ZIP codes in New Castle County, Delaware is about $101,295 — about 16% above the DE ZIP average ($87,207), and about 35% above the U.S. median ($75,149).

Among ZIPs with income data, 19732 is near the top at about $250,001, while 19801 (Wilmington) is near the bottom at about $44,505.

Housing in New Castle County

For housing in New Castle County, Delaware, the average median home value is about $359,771 and the average median rent is about $1,267.

The most populous ZIP is 19720 (New Castle) with about 60,593 residents. Use the table below to compare ZIP codes across the county.

ZIP codes in New Castle County

Sort by population, income, or home value. Click a column header to toggle ascending / descending.

CityCountyState
19720New CastleNew Castle CountyDE60,593$75,985$242,600
19702GlasgowNew Castle CountyDE56,049$92,304$331,200
19709MiddletownNew Castle CountyDE50,542$129,971$444,900
19711NewarkNew Castle CountyDE49,113$94,455$376,300
19701BearNew Castle CountyDE44,801$107,856$337,800
19805WilmingtonNew Castle CountyDE40,315$56,708$220,200
19808Pike CreekNew Castle CountyDE38,334$92,883$309,700
19713BrooksideNew Castle CountyDE30,549$72,850$267,500
19810ArdenNew Castle CountyDE25,859$110,486$420,300
19802WilmingtonNew Castle CountyDE25,670$54,370$188,400
19803WilmingtonNew Castle CountyDE21,971$133,941$436,200
19804NewportNew Castle CountyDE18,231$76,204$244,700
19707HockessinNew Castle CountyDE17,366$172,161$534,300
19801WilmingtonNew Castle CountyDE16,170$44,505$196,000
19703ClaymontNew Castle CountyDE15,936$76,328$266,500
19809WilmingtonNew Castle CountyDE15,129$85,988$308,900
19734TownsendNew Castle CountyDE14,151$131,745$426,300
19806WilmingtonNew Castle CountyDE9,934$86,240$370,500
19807GreenvilleNew Castle CountyDE7,763$156,905$895,400
19717NewarkNew Castle CountyDE6,522——
19706Delaware CityNew Castle CountyDE2,059$77,143$244,600
19731Port PennNew Castle CountyDE630$68,832$347,500
19730OdessaNew Castle CountyDE506$81,927$299,300
19733St. GeorgesNew Castle CountyDE182—$220,500
19732—New Castle CountyDE155$250,001$704,900
19736HockessinNew Castle CountyDE13——
19710—New Castle CountyDE———
19716NewarkNew Castle CountyDE———
19735—New Castle CountyDE———

Frequently asked questions

What are the demographics of New Castle County?

New Castle County, Delaware has a combined ZIP-area population of about 568,543 across 29 ZIP codes. Browse the ZIP table for population, income, and housing by code.

What is the median household income in New Castle County?

The average median household income across ZIP codes in New Castle County, Delaware is about $101,295, about 16% above the state ZIP average ($87,207), and about 35% above the U.S. median ($75,149). Average median home value is about $359,771. Among ZIPs with data, 19732 is near the top ($250,001) and 19801 (Wilmington) is near the bottom ($44,505).

How many ZIP codes are in New Castle County?

New Castle County, Delaware includes 29 ZIP codes on US5. Each row links to demographics, median income, and housing for that code.

Where can I find ZIP code demographics for New Castle County?

This page lists ZIP codes in New Castle County, Delaware with population, median household income, and home value. Select a ZIP for a full demographics profile.