ZIP Code 92780 — Tustin, CA
92780 is a standard (street delivery) ZIP code serving Tustin, California, in Orange 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 92780 at a glance
| ZIP code | 92780 |
|---|---|
| Primary city | Tustin |
| State | California (CA) |
| County | Orange FIPS 06059 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Los_Angeles |
| Population | 54,374 |
| Coordinates | 33.736850, -117.819680 |
How ZIP+4 works in 92780
The four digits after the hyphen encode a delivery segment inside 92780. 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 92780 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.
Other ZIP codes in Tustin
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 92780.
| ZIP | City | Distance |
|---|---|---|
| 92705 | Santa Ana, CA | 1.3 mi |
| 92782 | Tustin, CA | 1.4 mi |
| 92701 | Santa Ana, CA | 2.4 mi |
| 92606 | Irvine, CA | 2.7 mi |
| 92707 | Santa Ana, CA | 3.5 mi |
| 92866 | Orange, CA | 3.6 mi |
| 92604 | Irvine, CA | 3.8 mi |
| 92614 | Irvine, CA | 3.9 mi |
| 92706 | Santa Ana, CA | 4.1 mi |
| 92620 | Irvine, CA | 4.2 mi |
| 92868 | Orange, CA | 4.8 mi |
| 92703 | Santa Ana, CA | 5 mi |
Questions about 92780
What is the ZIP+4 code for 92780?
92780 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 92780, you need to look up a specific street address to get them.
What city is 92780?
92780 is assigned to Tustin, California, in Orange 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.