ZIP Code 78045 — Laredo, TX
78045 is a standard (street delivery) ZIP code serving Laredo, Texas, in Webb 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 78045 at a glance
| ZIP code | 78045 |
|---|---|
| Primary city | Laredo |
| State | Texas (TX) |
| County | Webb FIPS 48479 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 67,333 |
| Coordinates | 27.831970, -99.659630 |
How ZIP+4 works in 78045
The four digits after the hyphen encode a delivery segment inside 78045. 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 78045 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 Laredo
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 78045.
| ZIP | City | Distance |
|---|---|---|
| 78041 | Laredo, TX | 22.4 mi |
| 78040 | Laredo, TX | 24 mi |
| 78019 | Encinal, TX | 26.4 mi |
| 78044 | Laredo, TX | 26.9 mi |
| 78043 | Laredo, TX | 30.9 mi |
| 78836 | Catarina, TX | 33.9 mi |
| 78046 | Laredo, TX | 35.7 mi |
| 78001 | Artesia Wells, TX | 39.3 mi |
| 78369 | Mirando City, TX | 45.1 mi |
Questions about 78045
What is the ZIP+4 code for 78045?
78045 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 78045, you need to look up a specific street address to get them.
What city is 78045?
78045 is assigned to Laredo, Texas, in Webb 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.