ZIP Code 19730 — Odessa, DE
19730 is a standard (street delivery) ZIP code serving Odessa, 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 19730 at a glance
| ZIP code | 19730 |
|---|---|
| Primary city | Odessa |
| State | Delaware (DE) |
| County | New Castle FIPS 10003 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 425 |
| Coordinates | 39.454430, -75.660770 |
How ZIP+4 works in 19730
The four digits after the hyphen encode a delivery segment inside 19730. 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 19730 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.
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 19730.
| ZIP | City | Distance |
|---|---|---|
| 19709 | Middletown, DE | 2.7 mi |
| 19734 | Townsend, DE | 4.9 mi |
| 19731 | Port Penn, DE | 5.2 mi |
| 19733 | Saint Georges, DE | 7.3 mi |
| 21912 | Warwick, MD | 8.5 mi |
| 19706 | Delaware City, DE | 8.9 mi |
| 19701 | Bear, DE | 9.2 mi |
| 08038 | Hancocks Bridge, NJ | 9.3 mi |
| 21915 | Chesapeake City, MD | 10.5 mi |
| 21913 | Cecilton, MD | 11.6 mi |
| 19702 | Newark, DE | 12.1 mi |
| 21635 | Galena, MD | 12.3 mi |
Questions about 19730
What is the ZIP+4 code for 19730?
19730 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 19730, you need to look up a specific street address to get them.
What city is 19730?
19730 is assigned to Odessa, 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.