ZIP Code 23405 — Machipongo, VA
23405 is a standard (street delivery) ZIP code serving Machipongo, Virginia, in Northampton 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 23405 at a glance
| ZIP code | 23405 |
|---|---|
| Primary city | Machipongo |
| State | Virginia (VA) |
| County | Northampton FIPS 51131 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 1,237 |
| Coordinates | 37.414660, -75.919690 |
How ZIP+4 works in 23405
The four digits after the hyphen encode a delivery segment inside 23405. 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 23405 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 23405.
| ZIP | City | Distance |
|---|---|---|
| 23307 | Birdsnest, VA | 3 mi |
| 23354 | Franktown, VA | 4.5 mi |
| 23347 | Eastville, VA | 4.6 mi |
| 23408 | Marionville, VA | 4.8 mi |
| 23413 | Nassawadox, VA | 5 mi |
| 23398 | Jamesville, VA | 7.4 mi |
| 23350 | Exmore, VA | 7.4 mi |
| 23316 | Cheriton, VA | 8.6 mi |
| 23486 | Willis Wharf, VA | 9.4 mi |
| 23310 | Cape Charles, VA | 10.6 mi |
| 23306 | Belle Haven, VA | 10.8 mi |
| 23423 | Quinby, VA | 12.4 mi |
Questions about 23405
What is the ZIP+4 code for 23405?
23405 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 23405, you need to look up a specific street address to get them.
What city is 23405?
23405 is assigned to Machipongo, Virginia, in Northampton 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.