ZIP Code 95257 — Wilseyville, CA
95257 is a standard (street delivery) ZIP code serving Wilseyville, California, in Calaveras 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 95257 at a glance
| ZIP code | 95257 |
|---|---|
| Primary city | Wilseyville |
| State | California (CA) |
| County | Calaveras FIPS 06009 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 569 |
| Coordinates | 38.380680, -120.452550 |
How ZIP+4 works in 95257
The four digits after the hyphen encode a delivery segment inside 95257. 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 95257 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 95257.
| ZIP | City | Distance |
|---|---|---|
| 95255 | West Point, CA | 3 mi |
| 95248 | Rail Road Flat, CA | 3.9 mi |
| 95232 | Glencoe, CA | 6.9 mi |
| 95246 | Mountain Ranch, CA | 10.2 mi |
| 95245 | Mokelumne Hill, CA | 10.6 mi |
| 95689 | Volcano, CA | 10.8 mi |
| 95665 | Pine Grove, CA | 10.9 mi |
| 95224 | Avery, CA | 12.6 mi |
| 95666 | Pioneer, CA | 12.9 mi |
| 95233 | Hathaway Pines, CA | 14.2 mi |
| 95684 | Somerset, CA | 15.5 mi |
| 95629 | Fiddletown, CA | 15.6 mi |
Questions about 95257
What is the ZIP+4 code for 95257?
95257 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 95257, you need to look up a specific street address to get them.
What city is 95257?
95257 is assigned to Wilseyville, California, in Calaveras 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.