ZIP Code 95640 — Ione, CA
95640 is a standard (street delivery) ZIP code serving Ione, California, in Amador 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 95640 at a glance
| ZIP code | 95640 |
|---|---|
| Primary city | Ione |
| State | California (CA) |
| County | Amador FIPS 06005 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 13,926 |
| Coordinates | 38.339220, -120.940240 |
How ZIP+4 works in 95640
The four digits after the hyphen encode a delivery segment inside 95640. 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 95640 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 95640.
| ZIP | City | Distance |
|---|---|---|
| 95699 | Drytown, CA | 8.3 mi |
| 95226 | Campo Seco, CA | 8.4 mi |
| 95601 | Amador City, CA | 8.5 mi |
| 95638 | Herald, CA | 9.4 mi |
| 95254 | Wallace, CA | 9.4 mi |
| 95642 | Jackson, CA | 9.5 mi |
| 95225 | Burson, CA | 10.2 mi |
| 95227 | Clements, CA | 10.8 mi |
| 95669 | Plymouth, CA | 11.1 mi |
| 95685 | Sutter Creek, CA | 11.2 mi |
| 95252 | Valley Springs, CA | 13.5 mi |
| 95683 | Sloughhouse, CA | 14.6 mi |
Questions about 95640
What is the ZIP+4 code for 95640?
95640 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 95640, you need to look up a specific street address to get them.
What city is 95640?
95640 is assigned to Ione, California, in Amador 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.