ZIP Code 77597 — Wallisville, TX
77597 is a standard (street delivery) ZIP code serving Wallisville, Texas, in Chambers 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 77597 at a glance
| ZIP code | 77597 |
|---|---|
| Primary city | Wallisville |
| State | Texas (TX) |
| County | Chambers FIPS 48071 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 623 |
| Coordinates | 29.828110, -94.695210 |
How ZIP+4 works in 77597
The four digits after the hyphen encode a delivery segment inside 77597. 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 77597 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 77597.
| ZIP | City | Distance |
|---|---|---|
| 77560 | Hankamer, TX | 6.4 mi |
| 77514 | Anahuac, TX | 10.3 mi |
| 77523 | Baytown, TX | 10.7 mi |
| 77580 | Mont Belvieu, TX | 11.3 mi |
| 77582 | Raywood, TX | 13 mi |
| 77538 | Devers, TX | 14.7 mi |
| 77521 | Baytown, TX | 16 mi |
| 77665 | Winnie, TX | 17.3 mi |
| 77575 | Liberty, TX | 17.4 mi |
| 77629 | Nome, TX | 19 mi |
| 77533 | Daisetta, TX | 19.1 mi |
| 77520 | Baytown, TX | 19.3 mi |
Questions about 77597
What is the ZIP+4 code for 77597?
77597 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 77597, you need to look up a specific street address to get them.
What city is 77597?
77597 is assigned to Wallisville, Texas, in Chambers 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.