ZIP Code 77518 — Bacliff, TX
77518 is a standard (street delivery) ZIP code serving Bacliff, Texas, in Galveston 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 77518 at a glance
| ZIP code | 77518 |
|---|---|
| Primary city | Bacliff |
| State | Texas (TX) |
| County | Galveston FIPS 48167 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 9,541 |
| Coordinates | 29.505440, -94.986640 |
How ZIP+4 works in 77518
The four digits after the hyphen encode a delivery segment inside 77518. 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 77518 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 77518.
| ZIP | City | Distance |
|---|---|---|
| 77565 | Kemah, TX | 3.6 mi |
| 77539 | Dickinson, TX | 4.2 mi |
| 77573 | League City, TX | 6 mi |
| 77586 | Seabrook, TX | 6 mi |
| 77591 | Texas City, TX | 7.3 mi |
| 77058 | Houston, TX | 7.5 mi |
| 77598 | Webster, TX | 9.3 mi |
| 77507 | Pasadena, TX | 9.4 mi |
| 77590 | Texas City, TX | 9.6 mi |
| 77568 | La Marque, TX | 9.6 mi |
| 77062 | Houston, TX | 10.1 mi |
| 77059 | Houston, TX | 10.9 mi |
Questions about 77518
What is the ZIP+4 code for 77518?
77518 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 77518, you need to look up a specific street address to get them.
What city is 77518?
77518 is assigned to Bacliff, Texas, in Galveston 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.