ZIP Code 95237 — Lockeford, CA
95237 is a standard (street delivery) ZIP code serving Lockeford, California, in San Joaquin 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 95237 at a glance
| ZIP code | 95237 |
|---|---|
| Primary city | Lockeford |
| State | California (CA) |
| County | San Joaquin FIPS 06077 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 3,639 |
| Coordinates | 38.159530, -121.148450 |
How ZIP+4 works in 95237
The four digits after the hyphen encode a delivery segment inside 95237. 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 95237 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 95237.
| ZIP | City | Distance |
|---|---|---|
| 95253 | Victor, CA | 2.7 mi |
| 95240 | Lodi, CA | 3 mi |
| 95220 | Acampo, CA | 5.4 mi |
| 95227 | Clements, CA | 6.4 mi |
| 95212 | Stockton, CA | 8.7 mi |
| 95258 | Woodbridge, CA | 8.8 mi |
| 95632 | Galt, CA | 10.2 mi |
| 95236 | Linden, CA | 10.3 mi |
| 95254 | Wallace, CA | 10.7 mi |
| 95210 | Stockton, CA | 12 mi |
| 95638 | Herald, CA | 12.6 mi |
| 95242 | Lodi, CA | 13.2 mi |
Questions about 95237
What is the ZIP+4 code for 95237?
95237 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 95237, you need to look up a specific street address to get them.
What city is 95237?
95237 is assigned to Lockeford, California, in San Joaquin 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.