ZIP Code 19951 — Harbeson, DE
19951 is a standard (street delivery) ZIP code serving Harbeson, Delaware, in Sussex 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 19951 at a glance
| ZIP code | 19951 |
|---|---|
| Primary city | Harbeson |
| State | Delaware (DE) |
| County | Sussex FIPS 10005 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,245 |
| Coordinates | 38.687630, -75.251240 |
How ZIP+4 works in 19951
The four digits after the hyphen encode a delivery segment inside 19951. 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 19951 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 19951.
| ZIP | City | Distance |
|---|---|---|
| 19958 | Lewes, DE | 5.3 mi |
| 19968 | Milton, DE | 6.3 mi |
| 19966 | Millsboro, DE | 7.5 mi |
| 19947 | Georgetown, DE | 8 mi |
| 19971 | Rehoboth Beach, DE | 8.1 mi |
| 19939 | Dagsboro, DE | 8.8 mi |
| 19941 | Ellendale, DE | 11.9 mi |
| 19970 | Ocean View, DE | 12.3 mi |
| 19967 | Millville, DE | 12.4 mi |
| 19945 | Frankford, DE | 12.8 mi |
| 19930 | Bethany Beach, DE | 13 mi |
| 19960 | Lincoln, DE | 14.3 mi |
Questions about 19951
What is the ZIP+4 code for 19951?
19951 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 19951, you need to look up a specific street address to get them.
What city is 19951?
19951 is assigned to Harbeson, Delaware, in Sussex 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.