ZIP Code 95552 — Mad River, CA
95552 is a standard (street delivery) ZIP code serving Mad River, California, in Trinity 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 95552 at a glance
| ZIP code | 95552 |
|---|---|
| Primary city | Mad River |
| State | California (CA) |
| County | Trinity FIPS 06105 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 586 |
| Coordinates | 40.348990, -123.422480 |
How ZIP+4 works in 95552
The four digits after the hyphen encode a delivery segment inside 95552. 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 95552 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 95552.
| ZIP | City | Distance |
|---|---|---|
| 95514 | Blocksburg, CA | 13.7 mi |
| 95526 | Bridgeville, CA | 14.3 mi |
| 95511 | Alderpoint, CA | 15.4 mi |
| 96041 | Hayfork, CA | 16.6 mi |
| 96046 | Hyampom, CA | 18.1 mi |
| 95595 | Zenia, CA | 18.4 mi |
| 95554 | Myers Flat, CA | 19.7 mi |
| 95559 | Phillipsville, CA | 20.5 mi |
| 95569 | Redcrest, CA | 22.9 mi |
| 95553 | Miranda, CA | 25 mi |
| 95560 | Redway, CA | 26 mi |
| 96076 | Platina, CA | 26 mi |
Questions about 95552
What is the ZIP+4 code for 95552?
95552 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 95552, you need to look up a specific street address to get them.
What city is 95552?
95552 is assigned to Mad River, California, in Trinity 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.