New Castle County, Delaware ZIP codes
52ZIP codes
17Cities and towns
573,431People in ZIP areas
302, 410, 443Area codes
New Castle County is in Delaware and the Eastern Time zone. ZIP codes don’t follow county lines exactly, so a ZIP code listed here can reach into a neighboring county.
All ZIP codes in New Castle County
| ZIP code | City | Type | Population | Median income |
|---|---|---|---|---|
| 19701 | Bear | Standard | 42,984 | $111,198 |
| 19702 | Newark | Standard | 55,683 | $92,446 |
| 19703 | Claymont | Standard | 15,460 | $76,939 |
| 19706 | Delaware City | PO Box only | 2,038 | $83,681 |
| 19707 | Hockessin | Standard | 17,376 | $172,696 |
| 19708 | Kirkwood | PO Box only | – | – |
| 19709 | Middletown | Standard | 53,234 | $132,956 |
| 19710 | Montchanin | PO Box only | – | – |
| 19711 | Newark | Standard | 49,432 | $95,403 |
| 19712 | Newark | Unique | – | – |
| 19713 | Newark | Standard | 30,747 | $76,493 |
| 19714 | Newark | PO Box only | – | – |
| 19715 | Newark | PO Box only | – | – |
| 19716 | Newark | Standard | – | – |
| 19717 | Newark | Standard | 6,036 | – |
| 19718 | Newark | Unique | – | – |
| 19720 | New Castle | Standard | 62,392 | $75,403 |
| 19721 | New Castle | Unique | – | – |
| 19725 | Newark | Unique | – | – |
| 19726 | New Castle | Unique | – | – |
| 19730 | Odessa | PO Box only | 425 | $112,083 |
| 19731 | Port Penn | PO Box only | 655 | $71,282 |
| 19732 | Rockland | PO Box only | 89 | $236,000 |
| 19733 | Saint Georges | PO Box only | 186 | $82,604 |
| 19734 | Townsend | Standard | 14,214 | $127,803 |
| 19735 | Winterthur | Standard | – | – |
| 19736 | Yorklyn | Standard | 127 | – |
| 19801 | Wilmington | Standard | 16,327 | $52,810 |
| 19802 | Wilmington | Standard | 26,051 | $53,812 |
| 19803 | Wilmington | Standard | 22,279 | $135,218 |
| 19804 | Wilmington | Standard | 18,779 | $79,701 |
| 19805 | Wilmington | Standard | 41,402 | $60,221 |
| 19806 | Wilmington | Standard | 9,777 | $88,855 |
| 19807 | Wilmington | Standard | 7,815 | $153,341 |
| 19808 | Wilmington | Standard | 39,082 | $94,234 |
| 19809 | Wilmington | Standard | 14,311 | $81,288 |
| 19810 | Wilmington | Standard | 26,530 | $112,775 |
| 19850 | Wilmington | PO Box only | – | – |
| 19880 | Wilmington | PO Box only | – | – |
| 19884 | Wilmington | Unique | – | – |
| 19885 | Wilmington | Unique | – | – |
| 19886 | Wilmington | Unique | – | – |
| 19890 | Wilmington | Unique | – | – |
| 19891 | Wilmington | Unique | – | – |
| 19892 | Wilmington | Unique | – | – |
| 19893 | Wilmington | Unique | – | – |
| 19894 | Wilmington | Unique | – | – |
| 19895 | Wilmington | Unique | – | – |
| 19896 | Wilmington | Unique | – | – |
| 19897 | Wilmington | Unique | – | – |
| 19898 | Wilmington | Unique | – | – |
| 19899 | Wilmington | PO Box only | – | – |
Cities and towns in New Castle County
- Wilmington 25 ZIPs
- Newark 10 ZIPs
- New Castle 3 ZIPs
- Bear 1 ZIP
- Claymont 1 ZIP
- Delaware City 1 ZIP
- Hockessin 1 ZIP
- Kirkwood 1 ZIP
- Middletown 1 ZIP
- Montchanin 1 ZIP
- Odessa 1 ZIP
- Port Penn 1 ZIP
- Rockland 1 ZIP
- Saint Georges 1 ZIP
- Townsend 1 ZIP
- Winterthur 1 ZIP
- Yorklyn 1 ZIP
Area codes in New Castle County
Questions
- How many ZIP codes are in New Castle County, DE?
- New Castle County has 52 ZIP codes, 23 of them standard ZIP codes for street addresses.
- What cities are in New Castle County?
- New Castle County ZIP codes cover Wilmington, Newark, New Castle, Bear, Claymont, Delaware City, Hockessin and Kirkwood and 9 other places.
- What area code is New Castle County, DE?
- New Castle County uses area codes 302, 410, 443, 484, 610, 667 and 835.
- What time zone is New Castle County in?
- New Castle County is in Eastern Time.