ZIP Code 23703 — Portsmouth, VA
23703 is a standard (street delivery) ZIP code serving Portsmouth, Virginia, in Portsmouth 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 23703 at a glance
| ZIP code | 23703 |
|---|---|
| Primary city | Portsmouth |
| State | Virginia (VA) |
| County | Portsmouth FIPS 51740 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 25,610 |
| Coordinates | 36.880390, -76.371010 |
How ZIP+4 works in 23703
The four digits after the hyphen encode a delivery segment inside 23703. 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 23703 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 Portsmouth
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 23703.
| ZIP | City | Distance |
|---|---|---|
| 23707 | Portsmouth, VA | 3.1 mi |
| 23508 | Norfolk, VA | 3.4 mi |
| 23507 | Norfolk, VA | 3.9 mi |
| 23708 | Portsmouth, VA | 4.2 mi |
| 23517 | Norfolk, VA | 4.4 mi |
| 23701 | Portsmouth, VA | 4.7 mi |
| 23510 | Norfolk, VA | 4.8 mi |
| 23704 | Portsmouth, VA | 5 mi |
| 23505 | Norfolk, VA | 5 mi |
| 23551 | Norfolk, VA | 5.3 mi |
| 23511 | Norfolk, VA | 5.7 mi |
| 23702 | Portsmouth, VA | 5.9 mi |
Questions about 23703
What is the ZIP+4 code for 23703?
23703 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 23703, you need to look up a specific street address to get them.
What city is 23703?
23703 is assigned to Portsmouth, Virginia, in Portsmouth 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.