| Locality | Post Code |
|---|---|
| Addicks, Harris | 77079 |
| Addicks Barker, Harris | 77084 |
| Aldine, Harris | 77039 |
| Alief, Harris | 77411 |
| Astrodome, Harris | 77025 |
| Astroworld, Harris | 77025 |
| Atascocita, Harris | 77346 |
| Bammel, Harris | 77040 |
| Barker, Harris | 77413 |
| Baytown, Harris | 77520, 77521, 77522 |
| Bayway, Harris | 77520 |
| Beach City, Harris | 77520 |
| Bellaire, Harris | 77401 |
| Bordersville, Harris | 77338 |
| Bunker Hill Village, Harris | 77024 |
| Cedar Point, Harris | 77520 |
| Channelview, Harris | 77530 |
| Clear Lake City, Harris | 77058 |
| Cloverleaf, Harris | 77015 |
| Clutch, Harris | 77002 |
| Cove, Harris | 77520 |
| Crosby, Harris | 77532 |
| Cypress, Harris | 77429, 77433 |
| Deer Park, Harris | 77536 |
| El Lago, Harris | 77586 |
| Fondren, Harris | 77598 |