ZIP Code 23163 — Susan, VA
23163 is a standard (street delivery) ZIP code serving Susan, Virginia, in Mathews 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 23163 at a glance
| ZIP code | 23163 |
|---|---|
| Primary city | Susan |
| State | Virginia (VA) |
| County | Mathews FIPS 51115 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 78 |
| Coordinates | 37.357200, -76.297650 |
How ZIP+4 works in 23163
The four digits after the hyphen encode a delivery segment inside 23163. 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 23163 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 23163.
| ZIP | City | Distance |
|---|---|---|
| 23138 | Port Haywood, VA | 0.4 mi |
| 23130 | Onemo, VA | 2.9 mi |
| 23021 | Bohannon, VA | 5.1 mi |
| 23045 | Diggs, VA | 5.2 mi |
| 23025 | Cardinal, VA | 5.3 mi |
| 23109 | Mathews, VA | 5.4 mi |
| 23056 | Foster, VA | 6.5 mi |
| 23119 | Moon, VA | 6.6 mi |
| 23076 | Hudgins, VA | 8 mi |
| 23128 | North, VA | 9.8 mi |
| 23066 | Gwynn, VA | 9.8 mi |
| 23068 | Hallieford, VA | 9.8 mi |
Questions about 23163
What is the ZIP+4 code for 23163?
23163 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 23163, you need to look up a specific street address to get them.
What city is 23163?
23163 is assigned to Susan, Virginia, in Mathews 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.