ZIP Code 08873 — Somerset, NJ
08873 is a standard (street delivery) ZIP code serving Somerset, New Jersey, in Somerset 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 08873 at a glance
| ZIP code | 08873 |
|---|---|
| Primary city | Somerset |
| State | New Jersey (NJ) |
| County | Somerset FIPS 34035 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 56,327 |
| Coordinates | 40.498650, -74.532840 |
How ZIP+4 works in 08873
The four digits after the hyphen encode a delivery segment inside 08873. 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 08873 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 08873.
| ZIP | City | Distance |
|---|---|---|
| 08890 | Zarephath, NJ | 3.6 mi |
| 08880 | South Bound Brook, NJ | 3.8 mi |
| 08823 | Franklin Park, NJ | 4.2 mi |
| 08835 | Manville, NJ | 4.2 mi |
| 08902 | North Brunswick, NJ | 4.6 mi |
| 08901 | New Brunswick, NJ | 4.8 mi |
| 08854 | Piscataway, NJ | 4.9 mi |
| 08805 | Bound Brook, NJ | 5 mi |
| 08846 | Middlesex, NJ | 5.5 mi |
| 08904 | Highland Park, NJ | 5.5 mi |
| 08824 | Kendall Park, NJ | 5.5 mi |
| 08850 | Milltown, NJ | 6 mi |
Questions about 08873
What is the ZIP+4 code for 08873?
08873 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 08873, you need to look up a specific street address to get them.
What city is 08873?
08873 is assigned to Somerset, New Jersey, in Somerset 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.