ZIP Code 78561 — Lasara, TX
78561 is a standard (street delivery) ZIP code serving Lasara, Texas, in Willacy 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 78561 at a glance
| ZIP code | 78561 |
|---|---|
| Primary city | Lasara |
| State | Texas (TX) |
| County | Willacy FIPS 48489 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 1,457 |
| Coordinates | 26.468700, -97.915950 |
How ZIP+4 works in 78561
The four digits after the hyphen encode a delivery segment inside 78561. 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 78561 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 78561.
| ZIP | City | Distance |
|---|---|---|
| 78549 | Hargill, TX | 6.7 mi |
| 78540 | Edinburg, TX | 7.3 mi |
| 78538 | Edcouch, TX | 7.7 mi |
| 78580 | Raymondville, TX | 10.4 mi |
| 78594 | Sebastian, TX | 10.9 mi |
| 78542 | Edinburg, TX | 11 mi |
| 78562 | La Villa, TX | 12.5 mi |
| 78569 | Lyford, TX | 12.8 mi |
| 78543 | Elsa, TX | 12.8 mi |
| 78558 | La Blanca, TX | 13.8 mi |
| 78593 | Santa Rosa, TX | 14.9 mi |
| 78590 | San Perlita, TX | 17.5 mi |
Questions about 78561
What is the ZIP+4 code for 78561?
78561 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 78561, you need to look up a specific street address to get them.
What city is 78561?
78561 is assigned to Lasara, Texas, in Willacy 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.