New Castle County, DE Zip Codes

28 zip codes across 15 cities in New Castle County, DE

About New Castle County

New Castle County, Delaware (DE) contains 28 unique zip codes spanning 15 cities and communities. Each zip code covers a different area within the county, with varying demographics, income levels, and housing markets.

Browse the complete list below to find detailed population, income, home values, cost of living, and climate data for any zip code in New Castle County.

Total Zip Codes

Cities

County

New Castle

State

Cities in New Castle County

BearClaymontDelaware CityHistoric New CastleHockessinMiddletownMontchaninNewarkOdessaPort PennRocklandSaint GeorgesWilmingtonZcta 197hhZcta 198hh

All Zip Codes in New Castle County, DE

Zip Code	City	Compare
19701	Bear
19702	Bear	DE
19703	Claymont	DE
19706	Delaware City	DE
19707	Hockessin	DE
19709	Middletown	DE
19710	Montchanin	DE
19711	Newark	DE
19713	Newark	DE
19720	Historic New Castle	DE
19730	Odessa	DE
19731	Port Penn	DE
19732	Rockland	DE
19733	Saint Georges	DE
19734	Middletown	DE
19736	Hockessin	DE
197HH	Zcta 197hh	DE
19801	Wilmington	DE
19802	Wilmington	DE
19803	Wilmington	DE
19804	Wilmington	DE
19805	Wilmington	DE
19806	Wilmington	DE
19807	Wilmington	DE
19808	Wilmington	DE
19809	Wilmington	DE
19810	Wilmington	DE
198HH	Zcta 198hh	DE

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Frequently Asked Questions

How many zip codes are in New Castle County, DE?

New Castle County, DE has 28 zip codes across 15 cities.

What cities are in New Castle County?

Cities in New Castle County include Bear, Claymont, Delaware City, Historic New Castle, Hockessin, Middletown, Montchanin, Newark, Odessa, Port Penn, Rockland, Saint Georges, Wilmington, Zcta 197hh, Zcta 198hh.

What state is New Castle County in?

New Castle County is located in Delaware (DE).

All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.