ZIP Code 07090 — Westfield, NJ
07090 is a standard (street delivery) ZIP code serving Westfield, New Jersey, in Union 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 07090 at a glance
| ZIP code | 07090 |
|---|---|
| Primary city | Westfield |
| State | New Jersey (NJ) |
| County | Union FIPS 34039 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 31,111 |
| Coordinates | 40.651720, -74.343280 |
How ZIP+4 works in 07090
The four digits after the hyphen encode a delivery segment inside 07090. 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 07090 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 07090.
| ZIP | City | Distance |
|---|---|---|
| 07027 | Garwood, NJ | 1.1 mi |
| 07076 | Scotch Plains, NJ | 2.1 mi |
| 07016 | Cranford, NJ | 2.1 mi |
| 07092 | Mountainside, NJ | 2.2 mi |
| 07023 | Fanwood, NJ | 2.3 mi |
| 07066 | Clark, NJ | 2.7 mi |
| 07081 | Springfield, NJ | 3.4 mi |
| 07033 | Kenilworth, NJ | 3.4 mi |
| 07062 | Plainfield, NJ | 3.5 mi |
| 07204 | Roselle Park, NJ | 4.1 mi |
| 07067 | Colonia, NJ | 4.3 mi |
| 07203 | Roselle, NJ | 4.4 mi |
Questions about 07090
What is the ZIP+4 code for 07090?
07090 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 07090, you need to look up a specific street address to get them.
What city is 07090?
07090 is assigned to Westfield, New Jersey, in Union 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.