Which ZIP code in New Castle County has the highest median household income?

19707 (Hockessin), at $172,696 (±$14,973), among 23 ZIP codes with at least 1,000 residents.

Why are some ZIP codes missing?

ZIP codes with fewer than 1,000 residents are left out because their survey estimates swing too much to rank, and so are ZIP codes where the Census Bureau did not publish this figure.

Richest ZIP codes in New Castle County, DE

These are the 23 ZIP codes in New Castle County with the highest median household income, out of 23 with at least 1,000 residents. 19707 (Hockessin, $172,696), 19807 (Wilmington, $153,341) and 19803 (Wilmington, $135,218) lead the list. There is no single "best" ZIP code in New Castle County; the right one depends on who you want to reach, so the same ZIP codes are ranked several ways below.

Richest ZIP codes in New Castle County

Rank	ZIP	Mailing city	Median household income	Residents	Households	Residential mailboxes
1	19707	Hockessin	$172,696 ±$14,973	17,376	6,448	6,591
2	19807	Wilmington	$153,341 ±$25,219	7,815	3,555	3,831
3	19803	Wilmington	$135,218 ±$9,114	22,279	8,679	8,959
4	19709	Middletown	$132,956 ±$7,886	53,234	18,608	21,477
5	19734	Townsend	$127,803 ±$19,380	14,214	4,534	5,064
6	19810	Wilmington	$112,775 ±$10,208	26,530	10,655	10,813
7	19701	Bear	$111,198 ±$4,808	42,984	16,599	16,507
8	19938	Clayton	$99,596 ±$18,854	9,561	3,159	3,561
9	19711	Newark	$95,403 ±$5,056	49,432	18,815	21,334
10	19808	Wilmington	$94,234 ±$7,481	39,082	15,544	16,695
11	19702	Newark	$92,446 ±$6,176	55,683	21,252	21,813
12	19806	Wilmington	$88,855 ±$7,265	9,777	6,033	6,349
13	19706	Delaware City	$83,681 ±$7,559	2,038	758	—
14	19809	Wilmington	$81,288 ±$10,353	14,311	6,121	6,605
15	19804	Wilmington	$79,701 ±$8,251	18,779	7,677	7,432
16	19703	Claymont	$76,939 ±$4,579	15,460	6,974	7,192
17	19977	Smyrna	$76,826 ±$8,716	27,704	9,322	11,076
18	19713	Newark	$76,493 ±$8,647	30,747	12,526	13,188
19	19720	New Castle	$75,403 ±$5,055	62,392	23,641	23,179
20	21912	Warwick	$69,868 ±$29,080	1,536	696	466
21	19805	Wilmington	$60,221 ±$4,334	41,402	15,722	16,115
22	19802	Wilmington	$53,812 ±$4,563	26,051	10,478	10,665
23	19801	Wilmington	$52,810 ±$6,295	16,327	8,150	9,442

How we ranked them

Ranked by median household income (ACS 5-year estimates, 2020–2024). The Census Bureau caps published medians at $250,000; ZIP codes at the cap are shown as $250,000+ and ordered by population. ZIP codes need at least 1,000 residents to be ranked; 23 of 32 qualify.

Which of these to mail, and why

Higher-income ZIP codes suit offers with a bigger ticket: remodeling, pools, roofing, financial planning, private schools, premium dining. A median describes the middle household, not every door, so the routes inside each ZIP still vary.

The top five ZIP codes on this list hold 41,824 households, on 92 carrier routes with 45,922 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 19707 on the EDDM route map

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Businesses that mail these ZIP codes

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Frequently asked questions

Which ZIP code in New Castle County has the highest median household income?: 19707 (Hockessin), at $172,696 (±$14,973), among 23 ZIP codes with at least 1,000 residents.
How is this ranking calculated?: Ranked by median household income (ACS 5-year estimates, 2020–2024). The Census Bureau caps published medians at $250,000; ZIP codes at the cap are shown as $250,000+ and ordered by population.
Why are some ZIP codes missing?: ZIP codes with fewer than 1,000 residents are left out because their survey estimates swing too much to rank, and so are ZIP codes where the Census Bureau did not publish this figure.

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.