ZIP Code 95966 — Oroville, CA
95966 is a standard (street delivery) ZIP code serving Oroville, California, in Butte 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 95966 at a glance
| ZIP code | 95966 |
|---|---|
| Primary city | Oroville |
| State | California (CA) |
| County | Butte FIPS 06007 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 28,503 |
| Coordinates | 39.473320, -121.432840 |
How ZIP+4 works in 95966
The four digits after the hyphen encode a delivery segment inside 95966. 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 95966 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 Oroville
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 95966.
| ZIP | City | Distance |
|---|---|---|
| 95914 | Bangor, CA | 5.4 mi |
| 95972 | Rackerby, CA | 6 mi |
| 95968 | Palermo, CA | 6.9 mi |
| 95919 | Brownsville, CA | 9.3 mi |
| 95965 | Oroville, CA | 11.7 mi |
| 95941 | Forbestown, CA | 11.8 mi |
| 95918 | Browns Valley, CA | 12.8 mi |
| 95916 | Berry Creek, CA | 13.2 mi |
| 95962 | Oregon House, CA | 13.4 mi |
| 95925 | Challenge, CA | 13.5 mi |
| 95935 | Dobbins, CA | 14.4 mi |
| 95930 | Clipper Mills, CA | 15.4 mi |
Questions about 95966
What is the ZIP+4 code for 95966?
95966 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 95966, you need to look up a specific street address to get them.
What city is 95966?
95966 is assigned to Oroville, California, in Butte 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.