| 77340 Crabbs Prairie | 936 | Walker County | Texas (TX) |
| 77334 Dodge | 936 | Walker County | Texas (TX) |
| 77320 Huntsville | 936 | Walker County | Texas (TX) |
| 77340 Huntsville | 936 | Walker County | Texas (TX) |
| 77341 Huntsville | 936 | Walker County | Texas (TX) |
| 77342 Huntsville | 936 | Walker County | Texas (TX) |
| 77343 Huntsville | 936 | Walker County | Texas (TX) |
| 77344 Huntsville | 936 | Walker County | Texas (TX) |
| 77348 Huntsville | 936 | Walker County | Texas (TX) |
| 77349 Huntsville | 936 | Walker County | Texas (TX) |
| 77358 New Waverly | 936 | Walker County | Texas (TX) |
| 77340 Phelps | 936 | Walker County | Texas (TX) |
| 77367 Riverside | 936 | Walker County | Texas (TX) |
| 77341 Sam Houston State University | 936 | Walker County | Texas (TX) |
| 77343 Tx State Prison | 936 | Walker County | Texas (TX) |
| 77344 Tx State Prison | 936 | Walker County | Texas (TX) |
| 77348 Tx State Prison | 936 | Walker County | Texas (TX) |
| 77349 Tx State Prison | 936 | Walker County | Texas (TX) |