ZIP Code 77360 — Onalaska, TX
77360 is a standard (street delivery) ZIP code serving Onalaska, Texas, in Polk 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 77360 at a glance
| ZIP code | 77360 |
|---|---|
| Primary city | Onalaska |
| State | Texas (TX) |
| County | Polk FIPS 48373 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 6,223 |
| Coordinates | 30.847100, -95.113940 |
How ZIP+4 works in 77360
The four digits after the hyphen encode a delivery segment inside 77360. 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 77360 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 77360.
| ZIP | City | Distance |
|---|---|---|
| 77364 | Pointblank, TX | 8.5 mi |
| 77359 | Oakhurst, TX | 12.7 mi |
| 77350 | Leggett, TX | 12.8 mi |
| 75862 | Trinity, TX | 15 mi |
| 75960 | Moscow, TX | 15.4 mi |
| 77334 | Dodge, TX | 15.6 mi |
| 77331 | Coldspring, TX | 16.2 mi |
| 77367 | Riverside, TX | 16.4 mi |
| 75865 | Woodlake, TX | 17.1 mi |
| 75845 | Groveton, TX | 17.2 mi |
| 77351 | Livingston, TX | 20.2 mi |
| 77335 | Goodrich, TX | 21.1 mi |
Questions about 77360
What is the ZIP+4 code for 77360?
77360 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 77360, you need to look up a specific street address to get them.
What city is 77360?
77360 is assigned to Onalaska, Texas, in Polk 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.