New Castle County, Delaware

New Castle County covers 426 sq mi of land and has about 577,961 residents. 52 zip codes lie mainly within it, spread across 17 cities and towns. Zip codes that only partly reach into the county are listed on each zip's own page.

Population

577,961

1,356/sq mi

Median household income

$91K

U.S. $81K

Median home value

$352K

U.S. $333K

Median rent

$1,448

U.S. $1,413

Median age

39.3

U.S. 38.9

Poverty rate

10.1%

U.S. 12.5%

Cities and towns

Zip codes in New Castle County

52 total

Zip	City	Type	Population	IncomeMedian income	Home value
19701	Bear	Residential	42,984	$111,198	$372,500
19702	Newark	Residential	55,683	$92,446	$346,100
19703	Claymont	Residential	15,460	$76,939	$284,700
19706	Delaware City	Residential	2,038	$83,681	$263,000
19707	Hockessin	Residential	17,376	$172,696	$556,600
19708	Kirkwood · PO box	PO box / unique	—	—	—
19709	Middletown	Residential	53,234	$132,956	$470,900
19710	Montchanin	Residential	0	—	—
19711	Newark	Residential	49,432	$95,403	$398,900
19712	Newark · PO box	PO box / unique	—	—	—
19713	Newark	Residential	30,747	$76,493	$292,600
19714	Newark · PO box	PO box / unique	—	—	—
19715	Newark · PO box	PO box / unique	—	—	—
19716	Newark	Residential	0	—	—
19717	Newark	Residential	6,036	—	—
19718	Newark · PO box	PO box / unique	—	—	—
19720	New Castle	Residential	62,392	$75,403	$265,000
19721	New Castle · PO box	PO box / unique	—	—	—
19725	Newark · PO box	PO box / unique	—	—	—
19726	New Castle · PO box	PO box / unique	—	—	—
19730	Odessa	Residential	425	$112,083	$322,600
19731	Port Penn	Residential	655	$71,282	$369,300
19732	Rockland	Residential	89	$236,000	$581,300
19733	Saint Georges	Residential	186	$82,604	$304,500
19734	Townsend	Residential	14,214	$127,803	$430,700
19735	Winterthur	Residential	0	—	—
19736	Yorklyn	Residential	127	—	—
19801	Wilmington	Residential	16,327	$52,810	$199,900
19802	Wilmington	Residential	26,051	$53,812	$194,600
19803	Wilmington	Residential	22,279	$135,218	$457,200
19804	Wilmington	Residential	18,779	$79,701	$264,100
19805	Wilmington	Residential	41,402	$60,221	$237,100
19806	Wilmington	Residential	9,777	$88,855	$386,000
19807	Wilmington	Residential	7,815	$153,341	$936,900
19808	Wilmington	Residential	39,082	$94,234	$337,800
19809	Wilmington	Residential	14,311	$81,288	$314,900
19810	Wilmington	Residential	26,530	$112,775	$440,600
19850	Wilmington · PO box	PO box / unique	—	—	—
19880	Wilmington · PO box	PO box / unique	—	—	—
19884	Wilmington · PO box	PO box / unique	—	—	—
19885	Wilmington · PO box	PO box / unique	—	—	—
19886	Wilmington · PO box	PO box / unique	—	—	—
19890	Wilmington · PO box	PO box / unique	—	—	—
19891	Wilmington · PO box	PO box / unique	—	—	—
19892	Wilmington · PO box	PO box / unique	—	—	—
19893	Wilmington · PO box	PO box / unique	—	—	—
19894	Wilmington · PO box	PO box / unique	—	—	—
19895	Wilmington · PO box	PO box / unique	—	—	—
19896	Wilmington · PO box	PO box / unique	—	—	—
19897	Wilmington · PO box	PO box / unique	—	—	—
19898	Wilmington · PO box	PO box / unique	—	—	—
19899	Wilmington · PO box	PO box / unique	—	—	—

New Castle County at a glance

Compared with the U.S.

Household income distribution

<$25k

12%

$25–50k

15%

$50–75k

15%

$75–100k

13%

$100–150k

19%

$150–200k

11%

$200k+

15%

Highest education (adults 25+)

No diploma

High school

27%

Some college

18%

Associate's

Bachelor's

22%

Graduate

17%

How people get to work

Drove alone

69%

Carpooled

Transit

Walked

Bicycle

0.3%

Worked from home

18%

Other

At a glance

	New Castle	U.S.
Own their home	69%	65.2%
Bachelor's degree or higher	39.7%	35.7%
Work from home	17.6%	15.1%
Households with broadband	93.2%	91%
Without health insurance	5.9%	8.4%
Foreign-born	12.8%	14.1%
Veterans (of adults)	5.8%	6.2%
Unemployment	4.8%	5.2%
Average commute	25.3 min	26.4 min