ZIP Code 92518 — March Air Reserve Base, CA
92518 is a standard (street delivery) ZIP code serving March Air Reserve Base, California, in Riverside 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 92518 at a glance
| ZIP code | 92518 |
|---|---|
| Primary city | March Air Reserve Base |
| State | California (CA) |
| County | Riverside FIPS 06065 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 1,260 |
| Coordinates | 33.896020, -117.277050 |
How ZIP+4 works in 92518
The four digits after the hyphen encode a delivery segment inside 92518. 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 92518 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 92518.
| ZIP | City | Distance |
|---|---|---|
| 92553 | Moreno Valley, CA | 2.6 mi |
| 92508 | Riverside, CA | 3 mi |
| 92551 | Moreno Valley, CA | 3.1 mi |
| 92557 | Moreno Valley, CA | 5.1 mi |
| 92521 | Riverside, CA | 5.7 mi |
| 92506 | Riverside, CA | 5.8 mi |
| 92507 | Riverside, CA | 6 mi |
| 92571 | Perris, CA | 6 mi |
| 92504 | Riverside, CA | 7 mi |
| 92570 | Perris, CA | 8.1 mi |
| 92501 | Riverside, CA | 8.8 mi |
| 92324 | Colton, CA | 9.5 mi |
Questions about 92518
What is the ZIP+4 code for 92518?
92518 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 92518, you need to look up a specific street address to get them.
What city is 92518?
92518 is assigned to March Air Reserve Base, California, in Riverside 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.