ZIP Code 93442 — Morro Bay, CA
93442 is a standard (street delivery) ZIP code serving Morro Bay, California, in San Luis Obispo 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 93442 at a glance
| ZIP code | 93442 |
|---|---|
| Primary city | Morro Bay |
| State | California (CA) |
| County | San Luis Obispo FIPS 06079 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 11,571 |
| Coordinates | 35.400000, -120.804950 |
How ZIP+4 works in 93442
The four digits after the hyphen encode a delivery segment inside 93442. 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 93442 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 93442.
| ZIP | City | Distance |
|---|---|---|
| 93408 | San Luis Obispo, CA | 7.3 mi |
| 93422 | Atascadero, CA | 7.8 mi |
| 93402 | Los Osos, CA | 7.8 mi |
| 93409 | San Luis Obispo, CA | 8 mi |
| 93405 | San Luis Obispo, CA | 8.4 mi |
| 93430 | Cayucos, CA | 9.2 mi |
| 93407 | San Luis Obispo, CA | 9.9 mi |
| 93465 | Templeton, CA | 10.6 mi |
| 93410 | San Luis Obispo, CA | 10.6 mi |
| 93424 | Avila Beach, CA | 13.8 mi |
| 93401 | San Luis Obispo, CA | 15.5 mi |
| 93428 | Cambria, CA | 18.2 mi |
Questions about 93442
What is the ZIP+4 code for 93442?
93442 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 93442, you need to look up a specific street address to get them.
What city is 93442?
93442 is assigned to Morro Bay, California, in San Luis Obispo 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.