ZIP Code 23437 — Suffolk, VA
23437 is a standard (street delivery) ZIP code serving Suffolk, Virginia, in Suffolk 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 23437 at a glance
| ZIP code | 23437 |
|---|---|
| Primary city | Suffolk |
| State | Virginia (VA) |
| County | Suffolk FIPS 51800 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 5,023 |
| Coordinates | 36.635330, -76.802560 |
How ZIP+4 works in 23437
The four digits after the hyphen encode a delivery segment inside 23437. 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 23437 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.
Other ZIP codes in Suffolk
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 23437.
| ZIP | City | Distance |
|---|---|---|
| 23438 | Suffolk, VA | 6.9 mi |
| 23315 | Carrsville, VA | 7.5 mi |
| 23851 | Franklin, VA | 8.7 mi |
| 27937 | Gates, NC | 9.1 mi |
| 27969 | Roduco, NC | 11.9 mi |
| 23434 | Suffolk, VA | 12.6 mi |
| 23898 | Zuni, VA | 13.6 mi |
| 27926 | Corapeake, NC | 13.7 mi |
| 27935 | Eure, NC | 14.5 mi |
| 27818 | Como, NC | 14.9 mi |
| 23487 | Windsor, VA | 15.6 mi |
| 23874 | Newsoms, VA | 16.5 mi |
Questions about 23437
What is the ZIP+4 code for 23437?
23437 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 23437, you need to look up a specific street address to get them.
What city is 23437?
23437 is assigned to Suffolk, Virginia, in Suffolk 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.