ZIP Code 19805 — Wilmington, DE
19805 is a standard (street delivery) ZIP code serving Wilmington, Delaware, in New Castle County. To mail something here you only need these five digits — but the four-digit extension narrows delivery to a single point, and it is what USPS bulk postage discounts are priced on.
ZIP code 19805 at a glance
| ZIP code | 19805 |
|---|---|
| Primary city | Wilmington |
| State | Delaware (DE) |
| County | New Castle FIPS 10003 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 41,402 |
| Coordinates | 39.745230, -75.593730 |
How ZIP+4 works in 19805
The four digits after the hyphen encode a delivery segment inside 19805. In practice one segment usually means:
- One side of one block — odd numbers on a street between two cross streets
- A single large building, or one floor of it
- A group of PO boxes, sometimes a single box
- A single business that receives enough mail to warrant its own code
That is why 19805 has no single ZIP+4: two neighbors across the street from each other usually have different ones. Enter a street address above and we will return the exact nine-digit code along with the standardized USPS address format.
Other ZIP codes in Wilmington
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 19805.
| ZIP | City | Distance |
|---|---|---|
| 19806 | Wilmington, DE | 2 mi |
| 19804 | Wilmington, DE | 2.4 mi |
| 19801 | Wilmington, DE | 2.8 mi |
| 19710 | Montchanin, DE | 3.1 mi |
| 19802 | Wilmington, DE | 3.5 mi |
| 19736 | Yorklyn, DE | 3.6 mi |
| 19807 | Wilmington, DE | 3.8 mi |
| 19808 | Wilmington, DE | 3.9 mi |
| 19732 | Rockland, DE | 3.9 mi |
| 19735 | Winterthur, DE | 4.2 mi |
| 19803 | Wilmington, DE | 4.6 mi |
| 19809 | Wilmington, DE | 4.9 mi |
Questions about 19805
What is the ZIP+4 code for 19805?
19805 is the five-digit ZIP code. The ZIP+4 adds four more digits that identify a specific delivery point — usually one side of a city block, a single building, or a group of PO boxes. Because those four digits change from address to address within 19805, you need to look up a specific street address to get them.
What city is 19805?
19805 is assigned to Wilmington, Delaware, in New Castle County.
Do I need to use the ZIP+4?
It is optional for ordinary mail, but it speeds up sorting and it is required for most USPS bulk-mail postage discounts. Many address-verification and e-commerce systems also use ZIP+4 to confirm a delivery point exists.
Need thousands of these?
Upload a CSV and get ZIP+4, county, carrier route, and delivery-point data appended to every row — or call the API directly.