ZIP Code 08312 — Clayton, NJ
08312 is a standard (street delivery) ZIP code serving Clayton, New Jersey, in Gloucester 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 08312 at a glance
| ZIP code | 08312 |
|---|---|
| Primary city | Clayton |
| State | New Jersey (NJ) |
| County | Gloucester FIPS 34015 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 8,556 |
| Coordinates | 39.661430, -75.083750 |
How ZIP+4 works in 08312
The four digits after the hyphen encode a delivery segment inside 08312. 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 08312 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 08312.
| ZIP | City | Distance |
|---|---|---|
| 08028 | Glassboro, NJ | 2.9 mi |
| 08322 | Franklinville, NJ | 4.2 mi |
| 08343 | Monroeville, NJ | 4.8 mi |
| 08074 | Richwood, NJ | 5.5 mi |
| 08071 | Pitman, NJ | 5.6 mi |
| 08328 | Malaga, NJ | 5.8 mi |
| 08094 | Williamstown, NJ | 6.3 mi |
| 08080 | Sewell, NJ | 6.9 mi |
| 08081 | Sicklerville, NJ | 7.6 mi |
| 08344 | Newfield, NJ | 8.1 mi |
| 08062 | Mullica Hill, NJ | 8.2 mi |
| 08032 | Grenloch, NJ | 8.3 mi |
Questions about 08312
What is the ZIP+4 code for 08312?
08312 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 08312, you need to look up a specific street address to get them.
What city is 08312?
08312 is assigned to Clayton, New Jersey, in Gloucester 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.