ZIP Code 08403 — Longport, NJ
08403 is a standard (street delivery) ZIP code serving Longport, New Jersey, in Atlantic 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 08403 at a glance
| ZIP code | 08403 |
|---|---|
| Primary city | Longport |
| State | New Jersey (NJ) |
| County | Atlantic FIPS 34001 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 1,046 |
| Coordinates | 39.319150, -74.535350 |
How ZIP+4 works in 08403
The four digits after the hyphen encode a delivery segment inside 08403. 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 08403 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 08403.
| ZIP | City | Distance |
|---|---|---|
| 08402 | Margate City, NJ | 1.7 mi |
| 08221 | Linwood, NJ | 2.1 mi |
| 08225 | Northfield, NJ | 2.9 mi |
| 08406 | Ventnor City, NJ | 3.2 mi |
| 08244 | Somers Point, NJ | 3.4 mi |
| 08232 | Pleasantville, NJ | 4.9 mi |
| 08226 | Ocean City, NJ | 5 mi |
| 08401 | Atlantic City, NJ | 6.1 mi |
| 08234 | Egg Harbor Township, NJ | 6.6 mi |
| 08223 | Marmora, NJ | 7.3 mi |
| 08201 | Absecon, NJ | 7.5 mi |
| 08203 | Brigantine, NJ | 10.5 mi |
Questions about 08403
What is the ZIP+4 code for 08403?
08403 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 08403, you need to look up a specific street address to get them.
What city is 08403?
08403 is assigned to Longport, New Jersey, in Atlantic 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.