ZIP Code 96121 — Milford, CA
96121 is a standard (street delivery) ZIP code serving Milford, California, in Lassen 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 96121 at a glance
| ZIP code | 96121 |
|---|---|
| Primary city | Milford |
| State | California (CA) |
| County | Lassen FIPS 06035 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 217 |
| Coordinates | 40.169380, -120.376590 |
How ZIP+4 works in 96121
The four digits after the hyphen encode a delivery segment inside 96121. 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 96121 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 96121.
| ZIP | City | Distance |
|---|---|---|
| 96114 | Janesville, CA | 10.6 mi |
| 96113 | Herlong, CA | 12.2 mi |
| 96128 | Standish, CA | 12.5 mi |
| 96136 | Wendel, CA | 16.6 mi |
| 96109 | Doyle, CA | 19 mi |
| 95983 | Taylorsville, CA | 20.6 mi |
| 96129 | Beckwourth, CA | 24.2 mi |
| 96122 | Portola, CA | 24.6 mi |
| 95947 | Greenville, CA | 24.7 mi |
| 96105 | Chilcoot, CA | 25.9 mi |
| 96135 | Vinton, CA | 26.1 mi |
| 96117 | Litchfield, CA | 26.9 mi |
Questions about 96121
What is the ZIP+4 code for 96121?
96121 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 96121, you need to look up a specific street address to get them.
What city is 96121?
96121 is assigned to Milford, California, in Lassen 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.