ZIP codes
29
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.
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
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.
| ZIP | City | County | State | Population ↓ | Income | Home value |
|---|---|---|---|---|---|---|
| 19720 | New Castle | New Castle County | DE | 60,593 | $75,985 | $242,600 |
| 19702 | Glasgow | New Castle County | DE | 56,049 | $92,304 | $331,200 |
| 19709 | Middletown | New Castle County | DE | 50,542 | $129,971 | $444,900 |
| 19711 | Newark | New Castle County | DE | 49,113 | $94,455 | $376,300 |
| 19701 | Bear | New Castle County | DE | 44,801 | $107,856 | $337,800 |
| 19805 | Wilmington | New Castle County | DE | 40,315 | $56,708 | $220,200 |
| 19808 | Pike Creek | New Castle County | DE | 38,334 | $92,883 | $309,700 |
| 19713 | Brookside | New Castle County | DE | 30,549 | $72,850 | $267,500 |
| 19810 | Arden | New Castle County | DE | 25,859 | $110,486 | $420,300 |
| 19802 | Wilmington | New Castle County | DE | 25,670 | $54,370 | $188,400 |
| 19803 | Wilmington | New Castle County | DE | 21,971 | $133,941 | $436,200 |
| 19804 | Newport | New Castle County | DE | 18,231 | $76,204 | $244,700 |
| 19707 | Hockessin | New Castle County | DE | 17,366 | $172,161 | $534,300 |
| 19801 | Wilmington | New Castle County | DE | 16,170 | $44,505 | $196,000 |
| 19703 | Claymont | New Castle County | DE | 15,936 | $76,328 | $266,500 |
| 19809 | Wilmington | New Castle County | DE | 15,129 | $85,988 | $308,900 |
| 19734 | Townsend | New Castle County | DE | 14,151 | $131,745 | $426,300 |
| 19806 | Wilmington | New Castle County | DE | 9,934 | $86,240 | $370,500 |
| 19807 | Greenville | New Castle County | DE | 7,763 | $156,905 | $895,400 |
| 19717 | Newark | New Castle County | DE | 6,522 | — | — |
| 19706 | Delaware City | New Castle County | DE | 2,059 | $77,143 | $244,600 |
| 19731 | Port Penn | New Castle County | DE | 630 | $68,832 | $347,500 |
| 19730 | Odessa | New Castle County | DE | 506 | $81,927 | $299,300 |
| 19733 | St. Georges | New Castle County | DE | 182 | — | $220,500 |
| 19732 | — | New Castle County | DE | 155 | $250,001 | $704,900 |
| 19736 | Hockessin | New Castle County | DE | 13 | — | — |
| 19710 | — | New Castle County | DE | — | — | — |
| 19716 | Newark | New Castle County | DE | — | — | — |
| 19735 | — | New Castle County | DE | — | — | — |
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.