New Castle County, DE ZIP Codes
32 ZIP codes cover all or part of New Castle County, Delaware. The Census Bureau counts 577,961 residents in the county, with a median household income of $91,166 and a median home value of $352,200. Median household income ranges from $52,810 in 19801 to $172,696 in 19707. Its largest communities include Wilmington, Newark, Middletown, Bear and Glasgow.
New Castle County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 577,961 |
| Households | 224,173 |
| Median household income | $91,166 |
| Median home value | $352,200 |
| Median age | 39.3 |
| Median rent | $1,448 |
All 32 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 612,232 |
| Households (sum of ZIP codes) | 236,498 |
| Median household income, range across ZIP codes | $52,810 (19801) to $172,696 (19707) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $93,938 |
| Homeowners | 69.9% |
| Households with kids under 18 | 29.2% |
| Moved in the past year | 11.0% |
| Carrier routes in EDDM2GO's route library | 430 routes, 248,411 homes (24 of 32 ZIP codes) |
Top facts
- Highest median household income in New Castle County: 19707 ($172,696)
- Most residents: 19720 (62,392 people)
- Highest homeownership: 19938 (91.8% own their home)
- Most households with kids: 19938 (43.6% of households)
- Most new movers: 19717 (53.5% moved in last year)
- Youngest median age: 19717 (19.3 years)
- Highest median home value: 19807 ($936,900)
Every ZIP code in New Castle County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 19720 | New Castle | 62,392 | 23,641 | $75,403 | $265,000 | 67.6% | 28.1% | 10.5% | 39 | 24,786 | 100% of its land |
| 19702 | Newark | 55,683 | 21,252 | $92,446 | $346,100 | 60.2% | 33.0% | 12.5% | 31 | 23,032 | 100% of its land |
| 19709 | Middletown | 53,234 | 18,608 | $132,956 | $470,900 | 86.2% | 41.0% | 9.7% | 32 | 22,364 | 100% of its land |
| 19711 | Newark | 49,432 | 18,815 | $95,403 | $398,900 | 64.5% | 21.6% | 19.9% | 38 | 22,359 | 100% of its land |
| 19701 | Bear | 42,984 | 16,599 | $111,198 | $372,500 | 80.5% | 29.6% | 7.9% | 29 | 17,105 | 100% of its land |
| 19805 | Wilmington | 41,402 | 15,722 | $60,221 | $237,100 | 59.4% | 34.5% | 10.4% | 24 | 17,039 | 100% of its land |
| 19808 | Wilmington | 39,082 | 15,544 | $94,234 | $337,800 | 79.0% | 27.3% | 8.0% | 33 | 17,678 | 100% of its land |
| 19713 | Newark | 30,747 | 12,526 | $76,493 | $292,600 | 63.0% | 28.5% | 7.7% | 23 | 14,300 | 100% of its land |
| 19977 | Smyrna | 27,704 | 9,322 | $76,826 | $341,000 | 83.0% | 36.7% | 14.0% | 17 | 11,597 | 22% of its land |
| 19810 | Wilmington | 26,530 | 10,655 | $112,775 | $440,600 | 81.2% | 27.5% | 6.4% | 22 | 11,290 | 100% of its land |
| 19802 | Wilmington | 26,051 | 10,478 | $53,812 | $194,600 | 48.5% | 23.9% | 15.4% | 15 | 11,202 | 100% of its land |
| 19803 | Wilmington | 22,279 | 8,679 | $135,218 | $457,200 | 89.1% | 28.3% | 6.0% | 26 | 9,644 | 100% of its land |
| 19804 | Wilmington | 18,779 | 7,677 | $79,701 | $264,100 | 73.9% | 29.6% | 5.6% | 15 | 8,298 | 100% of its land |
| 19707 | Hockessin | 17,376 | 6,448 | $172,696 | $556,600 | 86.8% | 31.7% | 5.5% | 13 | 6,887 | 100% of its land |
| 19801 | Wilmington | 16,327 | 8,150 | $52,810 | $199,900 | 30.6% | 21.7% | 17.8% | 11 | 10,743 | 100% of its land |
| 19703 | Claymont | 15,460 | 6,974 | $76,939 | $284,700 | 54.7% | 21.7% | 8.5% | 10 | 7,516 | 100% of its land |
| 19809 | Wilmington | 14,311 | 6,121 | $81,288 | $314,900 | 74.1% | 29.8% | 5.0% | 13 | 7,077 | 100% of its land |
| 19734 | Townsend | 14,214 | 4,534 | $127,803 | $430,700 | 90.9% | 40.1% | 6.4% | 9 | 5,171 | 100% of its land |
| 19806 | Wilmington | 9,777 | 6,033 | $88,855 | $386,000 | 50.9% | 7.7% | 18.7% | 10 | 6,798 | 100% of its land |
| 19938 | Clayton | 9,561 | 3,159 | $99,596 | $381,000 | 91.8% | 43.6% | 6.2% | 5 | 3,572 | 15% of its land |
| 19807 | Wilmington | 7,815 | 3,555 | $153,341 | $936,900 | 66.3% | 22.2% | 12.4% | 12 | 4,087 | 100% of its land |
| 19717 | Newark | 6,036 | 0 | — | — | — | — | 53.5% | 1 | 37 | 100% of its land |
| 19706 | Delaware City | 2,038 | 758 | $83,681 | $263,000 | 74.5% | 25.9% | 5.5% | — | — | 100% of its land |
| 21912 | Warwick | 1,536 | 696 | $69,868 | $391,700 | 87.1% | 9.9% | 3.3% | 1 | 469 | 0% of its land |
| 19731 | Port Penn | 655 | 235 | $71,282 | $369,300 | 92.3% | 27.7% | 10.4% | — | — | 100% of its land |
| 19730 | Odessa | 425 | 159 | $112,083 | $322,600 | 80.5% | 37.7% | 4.5% | — | — | 100% of its land |
| 19733 | Saint Georges | 186 | 65 | $82,604 | $304,500 | 69.2% | 0.0% | 5.9% | — | — | 100% of its land |
| 19736 | Yorklyn | 127 | 39 | — | — | 0.0% | 100.0% | 0.0% | 1 | 29 | 100% of its land |
| 19732 | Rockland | 89 | 54 | $236,000 | $581,300 | 100.0% | 0.0% | 27.0% | — | — | 100% of its land |
| 19710 | Montchanin | 0 | 0 | — | — | — | — | — | — | — | 100% of its land |
| 19716 | Newark | 0 | 0 | — | — | — | — | — | — | — | 100% of its land |
| 19735 | New Castle County | 0 | 0 | — | — | — | — | — | — | — | 100% of its land |
A ZIP code is listed for New Castle County when at least 10% of its land is in the county, when it holds at least 10% of the county's land, or when the county is its main county. Totals add up whole ZIP codes, including parts that cross the county line; the Census county figures above do not.
Cities and communities
- Wilmington — 71,727 residents · 10 ZIP codes
- Newark — 30,330 residents · 5 ZIP codes
- Middletown — 24,661 residents · 1 ZIP code
- Bear — 22,370 residents · 2 ZIP codes
- Glasgow — 15,546 residents · 2 ZIP codes
- Brookside — 15,115 residents · 1 ZIP code
- Hockessin — 13,439 residents · 2 ZIP codes
- Pike Creek Valley — 12,431 residents · 2 ZIP codes
- Claymont — 8,786 residents · 1 ZIP code
- Wilmington Manor — 8,214 residents · 1 ZIP code
- North Star — 7,834 residents · 1 ZIP code
- Pike Creek — 7,129 residents · 3 ZIP codes
- Edgemoor — 6,349 residents · 2 ZIP codes
- Elsmere — 6,203 residents · 2 ZIP codes
- New Castle — 5,579 residents · 1 ZIP code
- Greenville — 3,713 residents · 1 ZIP code
- Townsend — 2,832 residents · 1 ZIP code
- Delaware City — 1,950 residents · 1 ZIP code
- St. Georges — 1,530 residents · 4 ZIP codes
- Bellefonte — 1,388 residents · 1 ZIP code
- Newport — 900 residents · 1 ZIP code
- Arden — 627 residents · 1 ZIP code
- Port Penn — 592 residents · 1 ZIP code
- Odessa — 409 residents · 1 ZIP code
- Ardentown — 233 residents · 2 ZIP codes
- Ardencroft — 213 residents · 1 ZIP code
Rankings
- Richest ZIP codes in New Castle County — 23 ZIP codes ranked
- ZIP codes with the highest home values in New Castle County — 23 ZIP codes ranked
- ZIP codes with the highest homeownership in New Castle County — 23 ZIP codes ranked
- ZIP codes with the most families with kids in New Castle County — 23 ZIP codes ranked
- ZIP codes with the most new movers in New Castle County — 24 ZIP codes ranked
- Youngest ZIP codes in New Castle County — 24 ZIP codes ranked
- Oldest ZIP codes in New Castle County — 24 ZIP codes ranked
- Fastest-growing ZIP codes in New Castle County — 24 ZIP codes ranked
Price a mailing to New Castle County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in New Castle County, DE?
- 19720, 19702, 19709, 19711, 19701, 19805, 19808, 19713, 19977, 19810, 19802, 19803, 19804, 19707, 19801, 19703, 19809, 19734, 19806, 19938, 19807, 19717, 19706, 21912, 19731, 19730, 19733, 19736, 19732, 19710, 19716 and 19735. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of New Castle County?
- 577,961 residents in 224,173 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in New Castle County?
- $91,166 for the county as a whole. Its ZIP codes range from $52,810 (19801) to $172,696 (19707).
- Which New Castle County ZIP code has the highest median household income?
- 19707, at $172,696, among ZIP codes with at least 1,000 residents. See the full ranking of New Castle County ZIP codes by income.
- How many carrier routes and mailboxes are in New Castle County?
- For the 24 of 32 ZIP codes in EDDM2GO's stored route library: 430 carrier routes reaching 248,411 residential and 14,646 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.